{
  "paper": {
    "school": "Catholic High",
    "year": 2022,
    "level": "P3",
    "label": "Semestral Assessment 2",
    "source_prefix": "Catholic High 2022 P3 Semestral Assessment 2",
    "has_answer_key": true
  },
  "questions": [
    {
      "n": 1,
      "type_id": 1,
      "question": "3456 is 1000 more than [?].",
      "answer0": "2456", "answer1": "3356", "answer2": "3556", "answer3": "4456",
      "correct_answer": 2,
      "skill_id": 66,
      "difficulty_id": 1,
      "explanation": "3456 - 1000 = 2456. The number that is 1000 more than 2456 is 3456, so the missing number is 2456.",
      "hints": ["1000 more means add 1000; work backwards by subtracting.", "3456 - 1000 = 2456."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q1",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key: option 3 (2456)."
    },
    {
      "n": 2,
      "type_id": 1,
      "question": "25 hundreds 7 tens is the same as [?].",
      "answer0": "320", "answer1": "950", "answer2": "2570", "answer3": "3200",
      "correct_answer": 2,
      "skill_id": 66,
      "difficulty_id": 1,
      "explanation": "25 hundreds = 2500, plus 7 tens = 70. 2500 + 70 = 2570.",
      "hints": ["1 hundred = 100; 1 ten = 10.", "25 x 100 = 2500; 7 x 10 = 70; add them."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q2",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key: option 3 (2570)."
    },
    {
      "n": 3,
      "type_id": 1,
      "question": "7 groups of 8 = 5 groups of 8 + [?] x 8",
      "answer0": "56", "answer1": "2", "answer2": "3", "answer3": "16",
      "correct_answer": 1,
      "skill_id": 73,
      "difficulty_id": 2,
      "explanation": "7 groups of 8 = 5 groups of 8 + 2 groups of 8, since 7 - 5 = 2. So the missing number is 2.",
      "hints": ["7 groups minus 5 groups leaves how many groups of 8?", "7 - 5 = 2 groups of 8."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q3",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key: option 2 (value 2)."
    },
    {
      "n": 4,
      "type_id": 1,
      "question": "Divide 739 by 7. What is the remainder?",
      "answer0": "1", "answer1": "2", "answer2": "5", "answer3": "4",
      "correct_answer": 3,
      "skill_id": 74,
      "difficulty_id": 2,
      "explanation": "739 / 7 = 105 remainder 4, since 105 x 7 = 735 and 739 - 735 = 4.",
      "hints": ["Find the largest multiple of 7 not exceeding 739.", "105 x 7 = 735; 739 - 735 = 4."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q4",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key: option 4 (remainder 4)."
    },
    {
      "n": 5,
      "type_id": 1,
      "question": "There were 156 marbles in 3 bags. How many marbles were there in 6 such bags?",
      "answer0": "26", "answer1": "52", "answer2": "312", "answer3": "936",
      "correct_answer": 2,
      "skill_id": 76,
      "difficulty_id": 2,
      "explanation": "6 bags is twice 3 bags, so 156 x 2 = 312 marbles.",
      "hints": ["6 bags = 2 x 3 bags.", "156 x 2 = 312."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q5",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key: option 3 (312)."
    },
    {
      "n": 6,
      "type_id": 1,
      "question": "The sum of two numbers is 5326. The bigger number is 3398. What is the smaller number?",
      "answer0": "1928", "answer1": "1938", "answer2": "2072", "answer3": "2672",
      "correct_answer": 0,
      "skill_id": 71,
      "difficulty_id": 2,
      "explanation": "Smaller number = sum - bigger number = 5326 - 3398 = 1928.",
      "hints": ["Subtract the bigger number from the sum.", "5326 - 3398 = 1928."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q6",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key: option 1 (1928)."
    },
    {
      "n": 7,
      "type_id": 1,
      "question": "John and Ken shared some money equally at first. After John gave Ken $36, how much more money did Ken have than John in the end?",
      "answer0": "$18", "answer1": "$54", "answer2": "$72", "answer3": "$90",
      "correct_answer": 2,
      "skill_id": 76,
      "difficulty_id": 3,
      "explanation": "When John gives $36 to Ken, the gap changes by 36 + 36 = 72. They were equal at first, so Ken has $72 more than John.",
      "hints": ["Giving money widens the gap by twice the amount transferred.", "2 x $36 = $72."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q7",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key: option 3 ($72)."
    },
    {
      "n": 8,
      "type_id": 1,
      "question": "Which one of the following shows the correct mass of the watermelon?",
      "answer0": "2005 g", "answer1": "2050 g", "answer2": "2450 g", "answer3": "2500 g",
      "correct_answer": 3,
      "skill_id": 85,
      "difficulty_id": 2,
      "explanation": "The scale needle points midway between 2 and 3 kg, reading about 2.5 kg = 2500 g.",
      "hints": ["Read the dial in kg, then convert to grams.", "2.5 kg = 2500 g."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q8",
      "image_needed": true,
      "image_options": false,
      "image_file": "q8.png",
      "notes": "Figure on page 5: a watermelon on a dial weighing scale marked 0-7 kg, needle between 2 and 3. Answer key: option 4 (2500 g)."
    },
    {
      "n": 9,
      "type_id": 1,
      "question": "Harold bought 4 boxes of pens. There were 12 pens in each box. He repacked all the pens equally into 8 bags. How many pens were there in each bag?",
      "answer0": "6", "answer1": "40", "answer2": "3", "answer3": "48",
      "correct_answer": 0,
      "skill_id": 76,
      "difficulty_id": 2,
      "explanation": "Total pens = 4 x 12 = 48. Repacked into 8 bags: 48 / 8 = 6 pens per bag.",
      "hints": ["First find the total number of pens.", "4 x 12 = 48; 48 / 8 = 6."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q9",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key: option 1 (6)."
    },
    {
      "n": 10,
      "type_id": 1,
      "question": "Find the difference between 2/3 and 1/9.",
      "answer0": "1/6", "answer1": "5/9", "answer2": "7/9", "answer3": "3/12",
      "correct_answer": 1,
      "skill_id": 81,
      "difficulty_id": 2,
      "explanation": "2/3 = 6/9. 6/9 - 1/9 = 5/9.",
      "hints": ["Make the denominators the same.", "2/3 = 6/9; 6/9 - 1/9 = 5/9."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q10",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key: option 2 (5/9)."
    },
    {
      "n": 11,
      "type_id": 1,
      "question": "Tom left a party at 9.15 p.m. He spent 2 h 25 min at the party. What time did Tom arrive at the party?",
      "answer0": "6.50 p.m.", "answer1": "7.10 p.m.", "answer2": "11.30 p.m.", "answer3": "11.40 p.m.",
      "correct_answer": 0,
      "skill_id": 92,
      "difficulty_id": 2,
      "explanation": "Arrival = 9.15 p.m. - 2 h 25 min. 9.15 - 2 h = 7.15 p.m.; 7.15 - 25 min = 6.50 p.m.",
      "hints": ["Subtract the duration from the leaving time.", "9.15 - 2 h = 7.15; 7.15 - 25 min = 6.50 p.m."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q11",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key: option 1 (6.50 p.m.)."
    },
    {
      "n": 12,
      "type_id": 1,
      "question": "A book costs $20. The book is $7.20 cheaper than a calculator. How much is the cost of the calculator?",
      "answer0": "$7.40", "answer1": "$12.80", "answer2": "$13.20", "answer3": "$27.20",
      "correct_answer": 3,
      "skill_id": 83,
      "difficulty_id": 2,
      "explanation": "The calculator is more expensive: $20 + $7.20 = $27.20.",
      "hints": ["Cheaper means the calculator costs more.", "$20 + $7.20 = $27.20."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q12",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key: option 4 ($27.20)."
    },
    {
      "n": 13,
      "type_id": 1,
      "question": "Which of the following fractions is smaller than 1/2? 4/8, 3/7, 5/9, 6/11",
      "answer0": "5/9", "answer1": "6/11", "answer2": "3/7", "answer3": "4/8",
      "correct_answer": 2,
      "skill_id": 79,
      "difficulty_id": 2,
      "explanation": "A fraction is smaller than 1/2 when the numerator is less than half the denominator. 3/7: half of 7 is 3.5, and 3 < 3.5, so 3/7 < 1/2. The others equal or exceed 1/2.",
      "hints": ["Compare each numerator with half the denominator.", "3 is less than half of 7 (3.5), so 3/7 is smaller than 1/2."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q13",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key: option 3 (3/7)."
    },
    {
      "n": 14,
      "type_id": 1,
      "question": "Some weights and Object Z are placed on a scale balance. What is the mass of Object Z?",
      "answer0": "100 g", "answer1": "325 g", "answer2": "425 g", "answer3": "650 g",
      "correct_answer": 1,
      "skill_id": 85,
      "difficulty_id": 3,
      "explanation": "Left pan: 3 weights balance right pan: 1 weight + 2 Object Z. So 2 weights = 2 Object Z, meaning 1 weight = 1 Object Z. With the standard weights summing to 650 g for two Z, each Z = 325 g.",
      "hints": ["Set the left side equal to the right side and cancel equal weights.", "The two Z objects together equal 650 g, so each Z = 325 g."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q14",
      "image_needed": true,
      "image_options": false,
      "image_file": "q14.png",
      "notes": "Figure on page 7: a beam balance, left pan holds 3 identical weights, right pan holds 1 identical weight plus two pentagon objects labelled Z. Answer key: option 2 (325 g)."
    },
    {
      "n": 15,
      "type_id": 1,
      "question": "Rectangle ABCD consists of 4 identical squares placed side by side. The length of each square is 5 cm. What is the area of the rectangle ABCD?",
      "answer0": "20 cm^2", "answer1": "25 cm^2", "answer2": "50 cm^2", "answer3": "100 cm^2",
      "correct_answer": 3,
      "skill_id": 97,
      "difficulty_id": 2,
      "explanation": "Each square has area 5 x 5 = 25 cm^2. Four squares: 4 x 25 = 100 cm^2.",
      "hints": ["Find the area of one square, then multiply by 4.", "5 x 5 = 25; 25 x 4 = 100 cm^2."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q15",
      "image_needed": true,
      "image_options": false,
      "image_file": "q15.png",
      "notes": "Figure on page 8: rectangle ABCD made of 4 identical squares in a row, each side 5 cm. Answer key: option 4 (100 cm^2)."
    },
    {
      "n": 16,
      "type_id": 2,
      "question": "What is seven thousand, one hundred and seven in numerals? [?]",
      "answer0": "7107", "answer1": null, "answer2": null, "answer3": null,
      "correct_answer": null,
      "skill_id": 67,
      "difficulty_id": 1,
      "explanation": "Seven thousand = 7000, one hundred = 100, seven = 7. 7000 + 100 + 7 = 7107.",
      "hints": ["Write each place value: thousands, hundreds, tens, ones.", "7000 + 100 + 0 + 7 = 7107."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q16",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key: 7107."
    },
    {
      "n": 17,
      "type_id": 2,
      "question": "What is the time shown on the clock? [?] minutes to [?]",
      "answer0": "25", "answer1": "1", "answer2": null, "answer3": null,
      "correct_answer": null,
      "skill_id": 89,
      "difficulty_id": 2,
      "explanation": "The hour hand is just before 1 and the minute hand points to 7 (35 min), so it is 25 minutes to 1.",
      "hints": ["The minute hand at 7 means 35 minutes past, i.e. 25 minutes to the next hour.", "Hour hand is approaching 1, so 25 minutes to 1."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q17",
      "image_needed": true,
      "image_options": false,
      "image_file": "q17.png",
      "notes": "Figure on page 9: analogue clock face, minute hand on 7, hour hand between 12 and 1. Answer phrased '[blank] minutes to [blank]'. Answer key: 25 minutes to 1."
    },
    {
      "n": 18,
      "type_id": 2,
      "question": "Write 4 km 6 m in metres. [?] m",
      "answer0": "4006", "answer1": null, "answer2": null, "answer3": null,
      "correct_answer": null,
      "skill_id": 86,
      "difficulty_id": 2,
      "explanation": "1 km = 1000 m, so 4 km = 4000 m. 4000 m + 6 m = 4006 m.",
      "hints": ["Convert kilometres to metres first.", "4 x 1000 + 6 = 4006 m."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q18",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key: 4006 m."
    },
    {
      "n": 19,
      "type_id": 2,
      "question": "Express 6/10 in its simplest form. [?]",
      "answer0": "3/5", "answer1": null, "answer2": null, "answer3": null,
      "correct_answer": null,
      "skill_id": 78,
      "difficulty_id": 1,
      "explanation": "Divide numerator and denominator by their common factor 2: 6/10 = 3/5.",
      "hints": ["Find a common factor of 6 and 10.", "Divide both by 2: 6/10 = 3/5."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q19",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key: 3/5."
    },
    {
      "n": 20,
      "type_id": 2,
      "question": "Express 1 h 34 min in minutes. [?] min",
      "answer0": "94", "answer1": null, "answer2": null, "answer3": null,
      "correct_answer": null,
      "skill_id": 91,
      "difficulty_id": 1,
      "explanation": "1 h = 60 min, so 1 h 34 min = 60 + 34 = 94 min.",
      "hints": ["1 hour = 60 minutes.", "60 + 34 = 94 min."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q20",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key: 94 mins."
    },
    {
      "n": 21,
      "type_id": 2,
      "question": "The distance from Point A to Point B is 760 m and the distance from Point B to Point C is 320 m. Find the total distance from Point A to Point B to Point C. [?] m",
      "answer0": "1080", "answer1": null, "answer2": null, "answer3": null,
      "correct_answer": null,
      "skill_id": 87,
      "difficulty_id": 1,
      "explanation": "Total distance = 760 m + 320 m = 1080 m.",
      "hints": ["Add the two distances.", "760 + 320 = 1080 m."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q21",
      "image_needed": true,
      "image_options": false,
      "image_file": "q21.png",
      "notes": "Figure on page 11: a line diagram showing Point A, Point B, Point C with 760 m between A-B and 320 m between B-C. Diagram is illustrative; answer derivable from text. Answer key: 1080 m."
    },
    {
      "n": 22,
      "type_id": 2,
      "question": "Form the smallest 4-digit odd number with the following digits. All the digits must be used. Each digit can only be used once. 7, 0, 1, 4 [?]",
      "answer0": "1047", "answer1": null, "answer2": null, "answer3": null,
      "correct_answer": null,
      "skill_id": 66,
      "difficulty_id": 3,
      "explanation": "Odd number must end in an odd digit; only 1 is odd, so last digit = 1. Remaining digits 7, 0, 4 arranged smallest without a leading zero: 1047.",
      "hints": ["For an odd number, the last digit must be odd.", "End in 1; arrange 0, 4, 7 smallest with no leading zero: 1047."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q22",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Digit cards 7,0,1,4 shown but reproduced in stem; no crop needed. Answer key: 1047."
    },
    {
      "n": 23,
      "type_id": 2,
      "question": "Study the number pattern. What is the missing number? 3110, 3220, 3330, [?], 3550, 3660",
      "answer0": "3440", "answer1": null, "answer2": null, "answer3": null,
      "correct_answer": null,
      "skill_id": 69,
      "difficulty_id": 2,
      "explanation": "The pattern increases by 110 each time: 3330 + 110 = 3440.",
      "hints": ["Find the difference between consecutive terms.", "Each term increases by 110: 3330 + 110 = 3440."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q23",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key: 3440."
    },
    {
      "n": 24,
      "type_id": 2,
      "question": "The number line is marked at equal intervals. What is the missing fraction indicated by the arrow on the number line? [?]",
      "answer0": "5/8", "answer1": null, "answer2": null, "answer3": null,
      "correct_answer": null,
      "skill_id": 80,
      "difficulty_id": 2,
      "explanation": "The number line from 0 to 1 is divided into 8 equal intervals. The arrow is at the 5th mark, giving 5/8.",
      "hints": ["Count how many equal parts lie between 0 and 1.", "8 parts; arrow on the 5th mark = 5/8."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q24",
      "image_needed": true,
      "image_options": false,
      "image_file": "q24.png",
      "notes": "Figure on page 13: number line 0 to 1 with 8 equal intervals, arrow pointing to the 5th tick. Answer key: 5/8."
    },
    {
      "n": 25,
      "type_id": 2,
      "question": "1/12 + 3/4 = [?]",
      "answer0": "10/12", "answer1": null, "answer2": null, "answer3": null,
      "correct_answer": null,
      "skill_id": 81,
      "difficulty_id": 2,
      "explanation": "3/4 = 9/12. 1/12 + 9/12 = 10/12.",
      "hints": ["Convert 3/4 to twelfths.", "3/4 = 9/12; 1/12 + 9/12 = 10/12."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q25",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key gives 10/12 (not simplified)."
    },
    {
      "n": 26,
      "type_id": 2,
      "question": "Michael had two $50 notes. He bought a bag that cost $76.95. How much money had he left? $[?]",
      "answer0": "23.05", "answer1": null, "answer2": null, "answer3": null,
      "correct_answer": null,
      "skill_id": 83,
      "difficulty_id": 2,
      "explanation": "Two $50 notes = $100. $100 - $76.95 = $23.05.",
      "hints": ["Two $50 notes total $100.", "$100 - $76.95 = $23.05."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q26",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key: $23.05."
    },
    {
      "n": 27,
      "type_id": 2,
      "question": "Richard started doing his homework at 2.45 p.m. He completed his homework at 3.35 p.m. on the same day. How much time did he spend on his homework? [?] min",
      "answer0": "50", "answer1": null, "answer2": null, "answer3": null,
      "correct_answer": null,
      "skill_id": 92,
      "difficulty_id": 2,
      "explanation": "From 2.45 p.m. to 3.35 p.m.: 2.45 to 3.00 is 15 min, 3.00 to 3.35 is 35 min. 15 + 35 = 50 min.",
      "hints": ["Count up to the next hour, then to the finishing time.", "15 min + 35 min = 50 min."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q27",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key: 50 mins."
    },
    {
      "n": 28,
      "type_id": 2,
      "question": "Express 9091 ml in litres and millilitres. [?] l [?] ml",
      "answer0": "9", "answer1": "91", "answer2": null, "answer3": null,
      "correct_answer": null,
      "skill_id": 86,
      "difficulty_id": 2,
      "explanation": "1 l = 1000 ml. 9091 ml = 9000 ml + 91 ml = 9 l 91 ml.",
      "hints": ["1 litre = 1000 ml.", "9091 ml = 9 l and 91 ml."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q28",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key: 9 l 91 ml. Compound-unit answer; two blanks."
    },
    {
      "n": 29,
      "type_id": 2,
      "question": "The total mass of a mango and a papaya is 876 g. The mass of the papaya is 3 times as heavy as the mango. What is the mass of the mango? [?] g",
      "answer0": "219", "answer1": null, "answer2": null, "answer3": null,
      "correct_answer": null,
      "skill_id": 76,
      "difficulty_id": 3,
      "explanation": "Mango = 1 unit, papaya = 3 units, total = 4 units = 876 g. 1 unit = 876 / 4 = 219 g, so the mango is 219 g.",
      "hints": ["Mango + papaya = 1 + 3 = 4 equal units.", "876 / 4 = 219 g."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q29",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key: 219 g."
    },
    {
      "n": 30,
      "type_id": 0,
      "question": "Line AB is drawn in a square grid. Draw a line perpendicular to line AB through point C.",
      "answer0": null, "answer1": null, "answer2": null, "answer3": null,
      "correct_answer": null,
      "skill_id": 101,
      "difficulty_id": 2,
      "explanation": "Draw a straight line through C at right angles to AB. Answer key shows the perpendicular line drawn from C across AB.",
      "hints": [],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q30",
      "image_needed": true,
      "image_options": false,
      "image_file": "q30.png",
      "notes": "Interactive draw-on-grid task (no app question type); type_id 0, skipped on insert. Figure on page 15: square grid with line AB diagonal and point C. Answer: draw a line through C perpendicular to AB."
    },
    {
      "n": 31,
      "type_id": 2,
      "question": "Lines AB, CD, EF and GH are drawn in a square grid. Name the two lines that are parallel to each other. Line [?] and [?]",
      "answer0": "EF", "answer1": "AB", "answer2": null, "answer3": null,
      "correct_answer": null,
      "skill_id": 100,
      "difficulty_id": 2,
      "explanation": "Lines EF and AB run in the same direction on the grid and never meet, so they are parallel.",
      "hints": ["Parallel lines have the same slope on the grid.", "EF and AB point in the same direction."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q31",
      "image_needed": true,
      "image_options": false,
      "image_file": "q31.png",
      "notes": "Figure on page 15: square grid with four labelled lines AB, CD, EF, GH crossing. Answer key: EF and AB. Two blanks for the two line names."
    },
    {
      "n": 32,
      "type_id": 2,
      "question": "Carl arranged some black and white beads in a pattern. He arranged a total of 72 beads. How many black beads did he use? [?]",
      "answer0": "12", "answer1": null, "answer2": null, "answer3": null,
      "correct_answer": null,
      "skill_id": 76,
      "difficulty_id": 3,
      "explanation": "The beads repeat in units of 6 (1 black followed by 5 others, the pattern boundary marked by a black bead). 72 beads / 6 per unit = 12, so 12 black beads were used.",
      "hints": ["Find how many beads make one repeating unit of the pattern.", "72 / 6 = 12 black beads."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q32",
      "image_needed": true,
      "image_options": false,
      "image_file": "q32.png",
      "notes": "Figure on page 16: a bead pattern starting black, then whites, repeating; total 72 beads. Answer key: 12 black beads."
    },
    {
      "n": 33,
      "type_id": 2,
      "question": "The figure is drawn in a square grid. Name all the obtuse angles in the figure. [?] and [?]",
      "answer0": "a", "answer1": "c", "answer2": null, "answer3": null,
      "correct_answer": null,
      "skill_id": 99,
      "difficulty_id": 2,
      "explanation": "Angles a and c are each greater than a right angle (obtuse), while the others are right or acute.",
      "hints": ["An obtuse angle is larger than a right angle (90 degrees) but less than a straight angle.", "Compare each marked angle to a right angle: a and c are obtuse."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q33",
      "image_needed": true,
      "image_options": false,
      "image_file": "q33.png",
      "notes": "Figure on page 16: a figure on a square grid with angles labelled a, b, c, d, e. Answer key: angle a and angle c. Two blanks for the two angle names."
    },
    {
      "n": 34,
      "type_id": 2,
      "question": "The bar graph shows the number of tickets sold for a concert from Monday to Friday. How many more tickets must be sold on Monday so that the number of tickets sold on both Monday and Friday will be the same? [?]",
      "answer0": "6", "answer1": null, "answer2": null, "answer3": null,
      "correct_answer": null,
      "skill_id": 104,
      "difficulty_id": 2,
      "explanation": "Friday sold 16 tickets, Monday sold 10. 16 - 10 = 6 more tickets needed on Monday.",
      "hints": ["Read the Monday and Friday bars from the graph.", "16 - 10 = 6."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q34",
      "image_needed": true,
      "image_options": false,
      "image_file": "q34.png",
      "notes": "Figure on page 17: bar graph 'Tickets sold for a concert', Mon=10, Tue=4, Wed=14, Thur=8, Fri=16. Answer key: 6."
    },
    {
      "n": 35,
      "type_id": 0,
      "question": "Study Figure X and Figure Y. Each statement below is either true, false or not possible to tell from the information given. For each statement, put a tick in the correct column. Figure X and Figure Y have the same perimeter. Figure X and Figure Y have the same area.",
      "answer0": null, "answer1": null, "answer2": null, "answer3": null,
      "correct_answer": null,
      "skill_id": 96,
      "difficulty_id": 3,
      "explanation": "Answer key: first statement (same perimeter) = True; second statement (same area) = False.",
      "hints": [],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q35",
      "image_needed": true,
      "image_options": false,
      "image_file": "q35.png",
      "notes": "Interactive tick-table task (no app question type); type_id 0, skipped on insert. Figure on page 18: Figure X (T-shape) and Figure Y (rectangular block) on 1 cm grid. Answer key: True (same perimeter), False (same area)."
    },
    {
      "n": 36,
      "type_id": 2,
      "question": "Abby had 1800 stickers. After giving away 657 stickers, she packed the rest of the stickers equally into 9 boxes. How many stickers were there in each box? [?]",
      "answer0": "127", "answer1": null, "answer2": null, "answer3": null,
      "correct_answer": null,
      "skill_id": 76,
      "difficulty_id": 2,
      "explanation": "Remaining = 1800 - 657 = 1143. 1143 / 9 = 127 stickers per box.",
      "hints": ["Subtract the stickers given away first.", "1800 - 657 = 1143; 1143 / 9 = 127."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q36",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key: 1143 / 9 = 127."
    },
    {
      "n": 37,
      "type_id": 2,
      "question": "Nathan bought a basketball and a pair of shoes for $91.50. The basketball cost $37.50 less than the pair of shoes. How much did the basketball cost? $[?]",
      "answer0": "27",
      "answer1": null, "answer2": null, "answer3": null,
      "correct_answer": null,
      "skill_id": 83,
      "difficulty_id": 3,
      "explanation": "Remove the difference: 91.50 - 37.50 = 54.00, which is twice the basketball's cost. 54 / 2 = $27.",
      "hints": ["Subtract the difference from the total, then halve.", "91.50 - 37.50 = 54; 54 / 2 = $27."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q37",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key: $27."
    },
    {
      "n": 38,
      "type_id": 2,
      "question": "William filled a container completely with 6 bottles of water. Each bottle of water contained 400 ml of water. He then poured 165 ml of water out of the container. How much water was left in the container? [?] ml",
      "answer0": "2235", "answer1": null, "answer2": null, "answer3": null,
      "correct_answer": null,
      "skill_id": 87,
      "difficulty_id": 2,
      "explanation": "Total = 6 x 400 = 2400 ml. After pouring out: 2400 - 165 = 2235 ml.",
      "hints": ["Find the total water poured in first.", "6 x 400 = 2400; 2400 - 165 = 2235 ml."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q38",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key: 2235 ml."
    },
    {
      "n": 39,
      "type_id": 2,
      "question": "Peter placed some pins along a straight line with an equal distance between each of them. The distance from the 1st pin to the 9th pin was 40 cm. The distance from the 9th to the last pin was 50 cm. Find the distance between the 1st and 2nd pin. [?] cm. How many pins did Peter place along the straight line? [?]",
      "answer0": "5", "answer1": "19", "answer2": null, "answer3": null,
      "correct_answer": null,
      "skill_id": 87,
      "difficulty_id": 3,
      "explanation": "(a) From 1st to 9th pin there are 8 equal gaps: 40 / 8 = 5 cm. (b) 9th to last is 50 cm: 50 / 5 = 10 gaps, so 9 + 10 = 19 pins in total.",
      "hints": ["From the 1st to the 9th pin there are 8 gaps, not 9.", "40 / 8 = 5 cm; 50 / 5 = 10 more gaps; 9 + 10 = 19 pins."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q39",
      "image_needed": true,
      "image_options": false,
      "image_file": "q39.png",
      "notes": "Figure on page 22: pins along a line, 1st-9th = 40 cm, 9th-last = 50 cm. Two-part question merged into two blanks. Answer key: (a) 5 cm, (b) 19 pins."
    },
    {
      "n": 40,
      "type_id": 2,
      "question": "Black and white counters are arranged to form a pattern. The table shows the number of black and white counters used for each figure: Figure 1 (3 white, 1 black, 4 total), Figure 2 (3 white, 4 black, 7 total), Figure 3 (6 white, 4 black, 10 total), Figure 4 (white, black, 13 total). Find the number of white counters for Figure 4. [?] Find the number of black counters for Figure 4. [?] Find the total number of counters for Figure 10. [?]",
      "answer0": "6", "answer1": "7", "answer2": "31",
      "answer3": null,
      "correct_answer": null,
      "skill_id": 76,
      "difficulty_id": 3,
      "explanation": "Total counters increase by 3 each figure (4, 7, 10, 13, ...), so Figure n total = 3 x n + 1. (a) Figure 4 has 6 white counters. (b) black counters = 13 - 6 = 7. (c) Figure 10 total = 3 x 10 + 1 = 31.",
      "hints": ["The total number of counters increases by 3 each figure.", "(c) Figure n total = 3 x n + 1; Figure 10 = 3 x 10 + 1 = 31."],
      "source": "Catholic High 2022 P3 Semestral Assessment 2 Q40",
      "image_needed": true,
      "image_options": false,
      "image_file": "q40.png",
      "notes": "Figure on page 23: counter patterns for Figures 1-3 plus a data table. Three-part question merged into three blanks. Answer key: (a) 6, (b) 7, (c) 3 x 10 + 1 = 31."
    }
  ]
}