{
  "paper": {
    "school": "Rosyth School",
    "year": 2024,
    "level": "P3",
    "label": "Weighted Assessment 1",
    "source_prefix": "Rosyth 2024 P3 Weighted Assessment 1",
    "has_answer_key": true
  },
  "questions": [
    {
      "n": 1,
      "type_id": 1,
      "question": "Which of the following lines is parallel to line CD?",
      "answer0": "AB",
      "answer1": "EF",
      "answer2": "GH",
      "answer3": "JK",
      "correct_answer": 2,
      "skill_id": 100,
      "difficulty_id": 2,
      "explanation": "On the square grid, line CD runs at a diagonal slope. Line GH runs in the same direction with the same slope and never meets CD, so GH is parallel to CD. AB, EF and JK have different directions. The answer is GH.",
      "hints": ["Parallel lines have the same slant and never cross.", "Trace each line's direction on the grid and compare it with CD."],
      "source": "Rosyth 2024 P3 Weighted Assessment 1 Q1",
      "image_needed": true,
      "image_options": false,
      "image_page": 3,
      "image_loc": "below the question, square grid with lines A-K",
      "image_bbox": [0.23, 0.27, 0.63, 0.50],
      "image_file": "q1.png",
      "notes": "Figure needed: grid showing labelled lines AB, CD, EF, GH, JK."
    },
    {
      "n": 2,
      "type_id": 1,
      "question": "Which of the following is the same as 9 kg 35 g?",
      "answer0": "935 g",
      "answer1": "9035 g",
      "answer2": "9305 g",
      "answer3": "9350 g",
      "correct_answer": 1,
      "skill_id": 86,
      "difficulty_id": 1,
      "explanation": "1 kg = 1000 g, so 9 kg = 9000 g. Then 9 kg 35 g = 9000 g + 35 g = 9035 g. The answer is 9035 g.",
      "hints": ["1 kg equals 1000 g.", "Convert the kilograms to grams, then add the extra grams."],
      "source": "Rosyth 2024 P3 Weighted Assessment 1 Q2",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": ""
    },
    {
      "n": 3,
      "type_id": 1,
      "question": "Which of the following fractions is the smallest?",
      "answer0": "1/8",
      "answer1": "1/2",
      "answer2": "1/3",
      "answer3": "1/4",
      "correct_answer": 0,
      "skill_id": 79,
      "difficulty_id": 1,
      "explanation": "These are all unit fractions (numerator 1). For unit fractions, the larger the denominator, the smaller the fraction. The largest denominator is 8, so 1/8 is the smallest.",
      "hints": ["When the top number is 1, a bigger bottom number means smaller pieces.", "Compare the denominators 8, 2, 3 and 4."],
      "source": "Rosyth 2024 P3 Weighted Assessment 1 Q3",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": ""
    },
    {
      "n": 4,
      "type_id": 1,
      "question": "What is the missing number in the box? 3/12 = 1/[?]",
      "answer0": "12",
      "answer1": "24",
      "answer2": "3",
      "answer3": "4",
      "correct_answer": 3,
      "skill_id": 78,
      "difficulty_id": 1,
      "explanation": "Express 3/12 in its simplest form. Divide both the numerator and denominator by 3: 3 divided 3 = 1 and 12 divided 3 = 4, giving 1/4. So the missing number is 4.",
      "hints": ["Simplify 3/12 by dividing top and bottom by the same number.", "3 goes into both 3 and 12."],
      "source": "Rosyth 2024 P3 Weighted Assessment 1 Q4",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Stem shows 3/12 = 1/[box]; box is the unknown denominator."
    },
    {
      "n": 5,
      "type_id": 1,
      "question": "Which fraction is greater than 1/2?",
      "answer0": "3/7",
      "answer1": "4/5",
      "answer2": "1/3",
      "answer3": "4/11",
      "correct_answer": 1,
      "skill_id": 79,
      "difficulty_id": 2,
      "explanation": "A fraction is greater than 1/2 when its numerator is more than half its denominator. For 4/5, half of 5 is 2.5 and 4 is more than that, so 4/5 > 1/2. The others (3/7, 1/3, 4/11) are all less than 1/2.",
      "hints": ["Compare each fraction to one half.", "A fraction beats 1/2 when the top is more than half the bottom."],
      "source": "Rosyth 2024 P3 Weighted Assessment 1 Q5",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": ""
    },
    {
      "n": 6,
      "type_id": 1,
      "question": "Amy's house and John's house are on the same street. The distance between Amy's house and the bus stop is 2 km 70 m. The distance between John's house and the bus stop is 650 m. What is the distance between Amy's house and John's house?",
      "answer0": "380 m",
      "answer1": "1 km 357 m",
      "answer2": "1 km 420 m",
      "answer3": "2 km 50 m",
      "correct_answer": 2,
      "skill_id": 87,
      "difficulty_id": 2,
      "explanation": "2 km 70 m = 2070 m. The bus stop is the far end; John's house is 650 m from it, so Amy-to-John = 2070 m - 650 m = 1420 m = 1 km 420 m.",
      "hints": ["Change 2 km 70 m into metres first (2070 m).", "Subtract John's 650 m from the total to get the gap between the two houses."],
      "source": "Rosyth 2024 P3 Weighted Assessment 1 Q6",
      "image_needed": true,
      "image_options": false,
      "image_page": 5,
      "image_loc": "middle of page, street diagram of Amy's house, John's house and bus stop",
      "image_bbox": [0.18, 0.59, 0.85, 0.72],
      "image_file": "q6.png",
      "notes": "Diagram shows Amy's house --?--> John's house --650 m--> Bus stop, with 2 km 70 m spanning Amy's house to bus stop."
    },
    {
      "n": 7,
      "type_id": 0,
      "question": "Draw a line perpendicular to the line AB, passing through the point X.",
      "answer0": null,
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 101,
      "difficulty_id": 2,
      "explanation": "On the square grid, draw a straight line through point X that meets line AB at a right angle (90 degrees). Since AB runs diagonally, the perpendicular line runs along the opposite diagonal through X.",
      "hints": ["Perpendicular lines meet at a right angle (a square corner).", "Use the grid squares to make the right angle at the crossing point."],
      "source": "Rosyth 2024 P3 Weighted Assessment 1 Q7",
      "image_needed": true,
      "image_options": false,
      "image_page": 6,
      "image_loc": "upper area, square grid with diagonal line AB and point X",
      "image_bbox": [0.19, 0.24, 0.81, 0.50],
      "image_file": "q7.png",
      "notes": "Interactive 'draw' task, no value answer -> type_id 0, skipped on insert. Grid: diagonal line A (top-left) to B (lower-mid) and point X to the right."
    },
    {
      "n": 8,
      "type_id": 2,
      "question": "There are three marked angles a, b and c in the figure. Arrange the angles in order beginning with the largest angle. Largest [?], [?], [?] Smallest",
      "answer0": "b",
      "answer1": "a",
      "answer2": "c",
      "answer3": null,
      "correct_answer": null,
      "skill_id": 99,
      "difficulty_id": 2,
      "explanation": "Compare each angle to a right angle. Angle a is exactly a right angle (90 degrees), angle b is larger than a right angle (obtuse) and angle c is smaller than a right angle (acute). So from largest to smallest the order is b, a, c.",
      "hints": ["Angle a is marked with a right-angle square (90 degrees).", "Decide which marked angle opens wider than a right angle and which is narrower."],
      "source": "Rosyth 2024 P3 Weighted Assessment 1 Q8",
      "image_needed": true,
      "image_options": false,
      "image_page": 6,
      "image_loc": "lower-left, quadrilateral figure with marked angles a, b, c",
      "image_bbox": [0.27, 0.57, 0.55, 0.78],
      "image_file": "q8.png",
      "notes": "Ordering task -> FIB with one blank per position; key answer b, a, c (largest to smallest)."
    },
    {
      "n": 9,
      "type_id": 2,
      "question": "Find the value of 7/10 - 1/2. Give your answer in the simplest form.",
      "answer0": "1/5",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 81,
      "difficulty_id": 2,
      "explanation": "Make the denominators the same: 1/2 = 5/10. Then 7/10 - 5/10 = 2/10. Simplify 2/10 by dividing top and bottom by 2 to get 1/5.",
      "hints": ["Rewrite 1/2 with a denominator of 10.", "Subtract the like fractions, then simplify the result."],
      "source": "Rosyth 2024 P3 Weighted Assessment 1 Q9",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 7/10 - 5/10 = 2/10 = 1/5."
    },
    {
      "n": 10,
      "type_id": 2,
      "question": "What are the values of A and B? Give your answer in the simplest form. A = [?] B = [?]",
      "answer0": "1/4",
      "answer1": "1/2",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 78,
      "difficulty_id": 2,
      "explanation": "The number line is marked in eighths. A sits at 2/8, which simplifies to 1/4. B sits at 4/8, which simplifies to 1/2. So A = 1/4 and B = 1/2.",
      "hints": ["The marks count up in eighths (2/8, 3/8, 4/8, 5/8 ...).", "Simplify each eighths fraction to its smallest form."],
      "source": "Rosyth 2024 P3 Weighted Assessment 1 Q10",
      "image_needed": true,
      "image_options": false,
      "image_page": 7,
      "image_loc": "middle of page, number line with A, 3/8, B, 5/8, 3/4 marked",
      "image_bbox": [0.12, 0.43, 0.78, 0.58],
      "image_file": "q10.png",
      "notes": "Number line: A is at 2/8, B is at 4/8. Key: A = 1/4, B = 1/2. answer0 = A, answer1 = B."
    },
    {
      "n": 11,
      "type_id": 2,
      "question": "The diagram shows two weighing scales and two objects, D and E. How much heavier is D than E? [?] g",
      "answer0": "400",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 87,
      "difficulty_id": 3,
      "explanation": "The first scale shows D alone reading 1300 g. The second scale shows D and E together reading 2200 g, so E = 2200 - 1300 = 900 g. D is heavier than E by 1300 - 900 = 400 g.",
      "hints": ["Read D's mass from the first scale, then D+E from the second.", "Find E by subtracting, then compare D and E."],
      "source": "Rosyth 2024 P3 Weighted Assessment 1 Q11",
      "image_needed": true,
      "image_options": false,
      "image_page": 8,
      "image_loc": "upper-middle, two dial weighing scales with objects D and D+E",
      "image_bbox": [0.17, 0.16, 0.74, 0.40],
      "image_file": "q11.png",
      "notes": "Key working: D = 1300 g; D+E = 2200 g; E = 2200-1300 = 900 g; D-E = 1300-900 = 400 g. Answer 400 g."
    },
    {
      "n": 12,
      "type_id": 2,
      "question": "Ahmad jogged 4500 m. He jogged 555 m more than his sister. (a) What was the distance Ahmad's sister jogged? (b) Find the total distance Ahmad and his sister jogged. Give your answer in km and m. (a) [?] m (b) [?]",
      "answer0": "3945 m",
      "answer1": "8 km 445 m",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 71,
      "difficulty_id": 2,
      "explanation": "(a) The sister jogged 555 m less than Ahmad: 4500 - 555 = 3945 m. (b) Total = 4500 + 3945 = 8445 m = 8 km 445 m.",
      "hints": ["'555 m more than his sister' means subtract 555 from 4500 to find the sister's distance.", "Add both distances, then split into km and m (8445 m = 8 km 445 m)."],
      "source": "Rosyth 2024 P3 Weighted Assessment 1 Q12",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: a) 4500-555 = 3945 m; b) 4500+3945 = 8445 m = 8 km 445 m. answer0 = (a), answer1 = (b)."
    },
    {
      "n": 13,
      "type_id": 2,
      "question": "Mrs Tan spent $568. Mrs Chandran spent twice as much money as Mrs Tan. Mdm Zu spent $300 less than Mrs Chandran. (a) How much money did Mrs Chandran spend? (b) How much more money did Mdm Zu spend than Mrs Tan? (a) $[?] (b) $[?]",
      "answer0": "1136",
      "answer1": "268",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 76,
      "difficulty_id": 2,
      "explanation": "(a) Mrs Chandran = 2 x $568 = $1136. (b) Mdm Zu = $1136 - $300 = $836. Mdm Zu spent more than Mrs Tan by $836 - $568 = $268.",
      "hints": ["'Twice as much' means multiply Mrs Tan's amount by 2.", "Find Mdm Zu's amount first, then subtract Mrs Tan's $568."],
      "source": "Rosyth 2024 P3 Weighted Assessment 1 Q13",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: a) 568x2 = 1136; b) Mdm Zu = 1136-300 = 836, then 836-568 = 268. answer0 = (a) in dollars, answer1 = (b) in dollars."
    },
    {
      "n": 14,
      "type_id": 2,
      "question": "In a bakery shop, 3 buns are sold for $8. (a) Mrs Han has $50. How many buns can Mrs Han buy at most? (b) Mr Sng bought 81 buns. How much did he pay for the buns? (a) [?] (b) $[?]",
      "answer0": "18",
      "answer1": "216",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 76,
      "difficulty_id": 3,
      "explanation": "(a) Each set of 3 buns costs $8. $50 divided 8 = 6 sets with $2 left over, so 6 sets = 6 x 3 = 18 buns at most. (b) 81 buns is 81 divided 3 = 27 sets, costing 27 x $8 = $216.",
      "hints": ["Buns are sold only in groups of 3 for $8; see how many whole $8 sets fit in $50.", "For 81 buns, find how many sets of 3 that is, then multiply by $8."],
      "source": "Rosyth 2024 P3 Weighted Assessment 1 Q14",
      "image_needed": true,
      "image_options": false,
      "image_page": 11,
      "image_loc": "upper-right, '3 Buns for $8' label with three bun pictures",
      "image_bbox": [0.58, 0.10, 0.82, 0.24],
      "image_file": "q14.png",
      "notes": "Key: a) 50 divided 8 = 6 R2, 6x3 = 18 buns; b) 81 divided 3 = 27, 27x8 = $216. answer0 = (a) buns, answer1 = (b) in dollars. Figure is the '3 Buns for $8' price label with three buns."
    }
  ]
}