{
  "paper": {
    "school": "Tao Nan",
    "year": 2022,
    "level": "P3",
    "label": "Weighted Assessment 2",
    "source_prefix": "Tao Nan 2022 P3 Weighted Assessment 2",
    "has_answer_key": true
  },
  "questions": [
    {
      "n": 1,
      "type_id": 1,
      "question": "What is the missing number in the equation?\n\n0 × 7 = 8 − [?]",
      "answer0": "1",
      "answer1": "0",
      "answer2": "7",
      "answer3": "8",
      "correct_answer": 3,
      "skill_id": 73,
      "difficulty_id": 1,
      "explanation": "0 × 7 = 0, so 8 − [?] = 0, which means [?] = 8.",
      "hints": ["Any number multiplied by 0 is 0.", "8 minus what gives 0?"],
      "source": "Tao Nan 2022 P3 Weighted Assessment 2 Q1",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key Q1 = option 4 (8). Verified."
    },
    {
      "n": 2,
      "type_id": 1,
      "question": "Which of the following is the same as 8903?",
      "answer0": "800 + 90 + 3",
      "answer1": "800 + 900 + 3",
      "answer2": "8000 + 90 + 3",
      "answer3": "8000 + 900 + 3",
      "correct_answer": 3,
      "skill_id": 66,
      "difficulty_id": 1,
      "explanation": "8903 = 8000 (thousands) + 900 (hundreds) + 0 (tens) + 3 (ones) = 8000 + 900 + 3.",
      "hints": ["Break the number into place values: thousands, hundreds, tens, ones.", "The 8 is in the thousands place; the 9 is in the hundreds place."],
      "source": "Tao Nan 2022 P3 Weighted Assessment 2 Q2",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key Q2 = option 4. Verified."
    },
    {
      "n": 3,
      "type_id": 1,
      "question": "Monica started watching a movie at 4.15 p.m. and ended at 6.05 p.m. What is the duration of the movie?",
      "answer0": "1 h 40 min",
      "answer1": "1 h 45 min",
      "answer2": "1 h 50 min",
      "answer3": "1 h 55 min",
      "correct_answer": 2,
      "skill_id": 92,
      "difficulty_id": 2,
      "explanation": "From 4.15 p.m. to 6.15 p.m. is 2 h; back 10 min to 6.05 p.m. gives 1 h 50 min. (Or 4.15→5.15→6.05 = 1 h + 50 min.)",
      "hints": ["Count the whole hours first, then the extra minutes.", "From 4.15 to 6.05, work out the hours and minutes separately."],
      "source": "Tao Nan 2022 P3 Weighted Assessment 2 Q3",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key Q3 = option 3 (1 h 50 min). Verified."
    },
    {
      "n": 4,
      "type_id": 1,
      "question": "Which one of the following figures is 1/4 shaded?",
      "answer0": "Figure 1",
      "answer1": "Figure 2",
      "answer2": "Figure 3",
      "answer3": "Figure 4",
      "correct_answer": 0,
      "skill_id": 42,
      "difficulty_id": 2,
      "explanation": "Each figure is a 2-by-5 grid of 10 squares; 1/4 of a figure is not a whole number of squares here, so the intended answer per the key is Figure 1 (the figure whose shaded fraction matches 1/4 / fewest shaded among the options).",
      "hints": ["Count the total squares in each figure and the number shaded.", "A quarter means 1 out of every 4 equal parts shaded."],
      "source": "Tao Nan 2022 P3 Weighted Assessment 2 Q4",
      "image_needed": true,
      "image_page": 4,
      "image_loc": "four shaded-grid option figures arranged 2x2 below the question, top of page",
      "image_options": true,
      "image_file": null,
      "notes": "Image-option MCQ: the four options are shaded-square grid pictures. Key Q4 = option 1. Crop each option to q4_opt0..q4_opt3.png downstream."
    },
    {
      "n": 5,
      "type_id": 1,
      "question": "How many minutes are there in 3 h 40 min?",
      "answer0": "120 min",
      "answer1": "190 min",
      "answer2": "220 min",
      "answer3": "230 min",
      "correct_answer": 2,
      "skill_id": 91,
      "difficulty_id": 1,
      "explanation": "3 h = 3 × 60 = 180 min; 180 + 40 = 220 min.",
      "hints": ["1 hour = 60 minutes.", "Multiply the hours by 60, then add the extra minutes."],
      "source": "Tao Nan 2022 P3 Weighted Assessment 2 Q5",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key Q5 = option 3 (220 min). Verified."
    },
    {
      "n": 6,
      "type_id": 2,
      "question": "Mr. Tay used 9 toothpicks to form the figure. How many of such figures can he form with 70 toothpicks?\n\nAns: [?]",
      "answer0": "7",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 74,
      "difficulty_id": 2,
      "explanation": "70 ÷ 9 = 7 remainder 3, so 7 complete figures can be formed.",
      "hints": ["Divide the total toothpicks by the number needed for one figure.", "70 ÷ 9 leaves a remainder; only complete figures count."],
      "source": "Tao Nan 2022 P3 Weighted Assessment 2 Q6",
      "image_needed": true,
      "image_page": 5,
      "image_loc": "centre of page, below the question — a hexagonal/cube outline made of toothpicks",
      "image_options": false,
      "image_file": null,
      "notes": "Key Q6: 70÷9 = 7R3, Ans 7. Figure shows the toothpick figure (worth 9 toothpicks)."
    },
    {
      "n": 7,
      "type_id": 2,
      "question": "What is the smallest four-digit even number that can be formed with the given digits?\n\nAns: [?]",
      "answer0": "2054",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 68,
      "difficulty_id": 3,
      "explanation": "Digits are 0, 5, 2, 4. The smallest 4-digit number cannot start with 0 and must end in an even digit. Leading 2, then 0, leaving 4 and 5 with an even last digit gives 2054.",
      "hints": ["The first digit cannot be 0, and an even number ends in 0, 2 or 4.", "Put the smallest allowed digit first, then build up keeping the last digit even."],
      "source": "Tao Nan 2022 P3 Weighted Assessment 2 Q7",
      "image_needed": true,
      "image_page": 5,
      "image_loc": "centre of page, below the question — four stars containing the digits 0, 5, 2, 4",
      "image_options": false,
      "image_file": null,
      "notes": "Key Q7 = 2054. Digits 0,5,2,4 shown inside four stars."
    },
    {
      "n": 8,
      "type_id": 2,
      "question": "Mrs. Lim formed the figures using identical sticks. How many of such sticks are needed to form the 7th figure?\n\nAns: [?]",
      "answer0": "22",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 76,
      "difficulty_id": 3,
      "explanation": "1st figure uses 4 sticks; each new square adds 3 sticks. 7th figure = 4 + 3 × (7 − 1) = 4 + 18 = 22 sticks.",
      "hints": ["Find how many extra sticks each next figure needs.", "Sticks = 4 + 3 × (figure number − 1)."],
      "source": "Tao Nan 2022 P3 Weighted Assessment 2 Q8",
      "image_needed": true,
      "image_page": 6,
      "image_loc": "centre of page, below the question — a growing staircase pattern of squares labelled 1st, 2nd, 3rd, 4th ... 7th",
      "image_options": false,
      "image_file": null,
      "notes": "Key Q8 working: 7-4=3, 3x3=9, 13+9=22. Ans 22 sticks."
    },
    {
      "n": 9,
      "type_id": 2,
      "question": "Arrange the following numbers from the smallest to the greatest.\n\n7 937, 3 797, 7 397, 3 977\n\nAns: [?], [?], [?], [?]",
      "answer0": "3797",
      "answer1": "3977",
      "answer2": "7397",
      "answer3": "7937",
      "correct_answer": null,
      "skill_id": 69,
      "difficulty_id": 2,
      "explanation": "Compare thousands first: 3 797 and 3 977 (three thousands) come before 7 397 and 7 937. Then compare the rest: 3 797 < 3 977 and 7 397 < 7 937.",
      "hints": ["Compare the thousands digit first.", "If the thousands are equal, compare the hundreds digit next."],
      "source": "Tao Nan 2022 P3 Weighted Assessment 2 Q9",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Ordering task converted to FIB (smallest to greatest). Key Q9 = 3797, 3977, 7397, 7937. Verified."
    },
    {
      "n": 10,
      "type_id": 2,
      "question": "Find the missing fraction in the box.\n\n1/12, 1/4, 5/12, [?], 3/4\n\nAns: [?]",
      "answer0": "7/12",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 77,
      "difficulty_id": 2,
      "explanation": "Express all in twelfths: 1/12, 3/12, 5/12, [?], 9/12. The sequence increases by 2/12, so the missing fraction is 7/12.",
      "hints": ["Write every fraction with a denominator of 12.", "1/4 = 3/12 and 3/4 = 9/12 — find the step between terms."],
      "source": "Tao Nan 2022 P3 Weighted Assessment 2 Q10",
      "image_needed": true,
      "image_page": 7,
      "image_loc": "top of page, below the question — a number line with the fractions 1/12, 1/4, 5/12, [box], 3/4 marked",
      "image_options": false,
      "image_file": null,
      "notes": "Key Q10 working shows 5/12 + 2/12 = 7/12; answer 7/12. Number line figure."
    },
    {
      "n": 11,
      "type_id": 0,
      "question": "Look at the figure carefully. Then, copy the same figure on the dot grid provided on the right.",
      "answer0": null,
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 101,
      "difficulty_id": 2,
      "explanation": "Reproduce the given H-shaped figure on the dot grid by joining the corresponding dots.",
      "hints": ["Count the dots between corners on the original figure.", "Match each line segment dot-for-dot on the empty grid."],
      "source": "Tao Nan 2022 P3 Weighted Assessment 2 Q11",
      "image_needed": true,
      "image_page": 7,
      "image_loc": "bottom of page — left: an H-shaped figure drawn on a dot grid; right: a blank dot grid",
      "image_options": false,
      "image_file": null,
      "notes": "Interactive draw/copy task (no value answer) -> type_id 0, SKIPPED on insert. Answer: copy the H-shaped figure onto the right dot grid (key Q11 shows the H figure)."
    },
    {
      "n": 12,
      "type_id": 1,
      "question": "Joey bought a skipping rope and another item. He spent a total of $70. What was the other item bought?\n\nPrice Board — Basketball $56.75, Badminton Racket $75.95, Soccer Ball $54.65, Skipping Rope $15.35",
      "answer0": "Basketball",
      "answer1": "Badminton Racket",
      "answer2": "Soccer Ball",
      "answer3": "Skipping Rope",
      "correct_answer": 2,
      "skill_id": 83,
      "difficulty_id": 2,
      "explanation": "$70.00 − $15.35 (skipping rope) = $54.65, which is the price of the Soccer Ball.",
      "hints": ["Subtract the skipping rope's price from $70.", "Match the remaining amount to a price on the board."],
      "source": "Tao Nan 2022 P3 Weighted Assessment 2 Q12",
      "image_needed": true,
      "image_page": 8,
      "image_loc": "top of page — the 'Price Board' table listing the four items, quantities and prices",
      "image_options": false,
      "image_file": null,
      "notes": "Word answer -> MCQ with the four item names as options. Key Q12: 70.00-15.35=54.65, Ans Soccer ball. Price-board table shared with Q13."
    },
    {
      "n": 13,
      "type_id": 2,
      "question": "John bought a badminton racket. He paid with 2 pieces of $50 notes. How much money did he have left?\n\nAns: $[?]",
      "answer0": "24.05",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 83,
      "difficulty_id": 2,
      "explanation": "2 × $50 = $100. $100 − $75.95 (badminton racket) = $24.05.",
      "hints": ["Two $50 notes make $100.", "Subtract the badminton racket's price from $100."],
      "source": "Tao Nan 2022 P3 Weighted Assessment 2 Q13",
      "image_needed": true,
      "image_page": 8,
      "image_loc": "top of page — the 'Price Board' table (same table used for Q12)",
      "image_options": false,
      "image_file": null,
      "notes": "Key Q13: 50x2=100, 100-75.95=$24.05. Answer stored as 24.05 (dollars). Needs the price-board table on page 8."
    },
    {
      "n": 14,
      "type_id": 2,
      "question": "What is the total distance travelled by Mary for the two days? Give your answer in metres.\n\nAns: [?] m",
      "answer0": "3600",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 87,
      "difficulty_id": 2,
      "explanation": "Mary: Monday 1 km 250 m = 1250 m; Tuesday 2350 m. Total = 1250 + 2350 = 3600 m.",
      "hints": ["Convert 1 km 250 m to metres first (1 km = 1000 m).", "Add Monday's and Tuesday's distances."],
      "source": "Tao Nan 2022 P3 Weighted Assessment 2 Q14",
      "image_needed": true,
      "image_page": 9,
      "image_loc": "top of page — table of walking distances for Victor and Mary on Monday and Tuesday",
      "image_options": false,
      "image_file": null,
      "notes": "Key Q14: 1km=1000m, 1250+2350=3600m. Needs distance table (shared with Q15)."
    },
    {
      "n": 15,
      "type_id": 2,
      "question": "Victor travelled a total distance of 5 km for the two days. What is the distance he travelled on Tuesday? Give your answer in metres.\n\nAns: [?] m",
      "answer0": "2900",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 87,
      "difficulty_id": 2,
      "explanation": "Victor's total = 5 km = 5000 m. Monday = 2 km 100 m = 2100 m. Tuesday = 5000 − 2100 = 2900 m.",
      "hints": ["Convert 5 km and 2 km 100 m into metres.", "Subtract Monday's distance from the two-day total."],
      "source": "Tao Nan 2022 P3 Weighted Assessment 2 Q15",
      "image_needed": true,
      "image_page": 9,
      "image_loc": "top of page — table of walking distances for Victor and Mary on Monday and Tuesday (same table as Q14)",
      "image_options": false,
      "image_file": null,
      "notes": "Key Q15: 5km=5000m, 5000-2100=2900m. Needs distance table (shared with Q14)."
    }
  ]
}