{
  "paper": {
    "school": "Henry Park",
    "year": 2025,
    "level": "P2",
    "label": "Quiz 4-5-6",
    "source_prefix": "Henry Park 2025 P2 Quiz 4-5-6",
    "has_answer_key": true
  },
  "questions": [
    {
      "n": 1,
      "type_id": 1,
      "question": "Which of the following shows that 2/4 of the figure is shaded?",
      "answer0": "Figure 1",
      "answer1": "Figure 2",
      "answer2": "Figure 3",
      "answer3": "Figure 4",
      "correct_answer": 1,
      "skill_id": 41,
      "difficulty_id": 1,
      "explanation": "2/4 means 2 of the 4 equal parts are shaded. Figure 2 has exactly 2 of the 4 squares shaded.",
      "hints": ["The figure is split into 4 equal parts.", "Count how many of the 4 parts are shaded; you want exactly 2."],
      "source": "Henry Park 2025 P2 Quiz 4-5-6 Q1",
      "image_needed": true,
      "image_options": true,
      "image_file": null,
      "notes": "Options are pictures (2x2 grids with different parts shaded). image_page=1, options arranged 1)-4) below the stem. Key=option 2 (0-based index 1). Crop each option to q1_opt0.png..q1_opt3.png."
    },
    {
      "n": 2,
      "type_id": 1,
      "question": "The 4 containers are of the same size. Which container holds the smallest volume of water?",
      "answer0": "Container 1",
      "answer1": "Container 2",
      "answer2": "Container 3",
      "answer3": "Container 4",
      "correct_answer": 1,
      "skill_id": 53,
      "difficulty_id": 1,
      "explanation": "All containers are the same size, so the one with the lowest water level holds the smallest volume. Container 2 has the least water.",
      "hints": ["Compare the water levels.", "The lowest level holds the least water."],
      "source": "Henry Park 2025 P2 Quiz 4-5-6 Q2",
      "image_needed": true,
      "image_options": false,
      "image_file": "q2.png",
      "notes": "Figure: 4 identical containers with different water levels. image_page=2, top of page. Key=option 2 (index 1)."
    },
    {
      "n": 3,
      "type_id": 1,
      "question": "A jug contains 9 l of juice. Tom pours all the juice in the jug equally into 3 bottles. How much juice is there in each bottle?",
      "answer0": "3 l",
      "answer1": "6 l",
      "answer2": "12 l",
      "answer3": "27 l",
      "correct_answer": 0,
      "skill_id": 54,
      "difficulty_id": 1,
      "explanation": "9 l shared equally among 3 bottles: 9 / 3 = 3 l per bottle.",
      "hints": ["Divide the total volume by the number of bottles.", "9 / 3 = 3"],
      "source": "Henry Park 2025 P2 Quiz 4-5-6 Q3",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key=option 1 (index 0)."
    },
    {
      "n": 4,
      "type_id": 1,
      "question": "Which fraction is greater than 3/10 but smaller than 7/10?",
      "answer0": "2/10",
      "answer1": "6/10",
      "answer2": "7/10",
      "answer3": "9/10",
      "correct_answer": 1,
      "skill_id": 43,
      "difficulty_id": 2,
      "explanation": "Like denominators, so compare numerators. We need a fraction between 3/10 and 7/10. 6/10 fits since 3 < 6 < 7.",
      "hints": ["Denominators are the same, so just compare the top numbers.", "Find a numerator between 3 and 7 (not 3 or 7)."],
      "source": "Henry Park 2025 P2 Quiz 4-5-6 Q4",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Stripped 'below'. Key=option 2 (index 1)."
    },
    {
      "n": 5,
      "type_id": 1,
      "question": "3/9 + 4/9 = [?]/9 + 2/9",
      "answer0": "2/9",
      "answer1": "5/9",
      "answer2": "7/9",
      "answer3": "9/9",
      "correct_answer": 1,
      "skill_id": 44,
      "difficulty_id": 2,
      "explanation": "Left side = 3/9 + 4/9 = 7/9. Right side = box/9 + 2/9, so box/9 = 7/9 - 2/9 = 5/9. The missing fraction is 5/9.",
      "hints": ["First add the left side: 3/9 + 4/9.", "Then subtract 2/9 to find the box."],
      "source": "Henry Park 2025 P2 Quiz 4-5-6 Q5",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "MCQ asks for the value in the box. Key=option 2 (index 1), 5/9."
    },
    {
      "n": 6,
      "type_id": 2,
      "question": "1/6 + 4/6 = [?]",
      "answer0": "5/6",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 44,
      "difficulty_id": 1,
      "explanation": "Add like fractions: 1/6 + 4/6 = 5/6.",
      "hints": ["Same denominator, so add the numerators.", "1 + 4 = 5, keep the 6."],
      "source": "Henry Park 2025 P2 Quiz 4-5-6 Q6",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key=5/6."
    },
    {
      "n": 7,
      "type_id": 2,
      "question": "10/11 - 4/11 = [?]",
      "answer0": "6/11",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 44,
      "difficulty_id": 1,
      "explanation": "Subtract like fractions: 10/11 - 4/11 = 6/11.",
      "hints": ["Same denominator, so subtract the numerators.", "10 - 4 = 6, keep the 11."],
      "source": "Henry Park 2025 P2 Quiz 4-5-6 Q7",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key=6/11."
    },
    {
      "n": 8,
      "type_id": 0,
      "question": "The figure is divided into ten equal parts. Shade 7/10 of the figure.",
      "answer0": null,
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 41,
      "difficulty_id": 1,
      "explanation": "Shade any 7 of the 10 equal parts.",
      "hints": [],
      "source": "Henry Park 2025 P2 Quiz 4-5-6 Q8",
      "image_needed": true,
      "image_options": false,
      "image_file": "q8.png",
      "notes": "Interactive shading task -> type_id 0 (skipped on insert). Answer: shade 7 of the 10 equal parts. image_page=4, bottom of page (2x5 grid)."
    },
    {
      "n": 9,
      "type_id": 2,
      "question": "Arrange the fractions in order. Begin with the smallest fraction. 3/7, 2/7, 6/7",
      "answer0": "2/7",
      "answer1": "3/7",
      "answer2": "6/7",
      "answer3": null,
      "correct_answer": null,
      "skill_id": 43,
      "difficulty_id": 1,
      "explanation": "Like denominators, so order by numerator: 2 < 3 < 6. Smallest to largest: 2/7, 3/7, 6/7.",
      "hints": ["Same denominator, so compare the numerators.", "2 < 3 < 6."],
      "source": "Henry Park 2025 P2 Quiz 4-5-6 Q9",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Ordering task -> FIB, one blank per position smallest to largest. Key=2/7, 3/7, 6/7."
    },
    {
      "n": 10,
      "type_id": 1,
      "question": "Vases A, B and C are of the same size. Water from beakers of the same size is poured into the empty vases. Which vase has the greatest volume of water?",
      "answer0": "Vase A",
      "answer1": "Vase B",
      "answer2": "Vase C",
      "answer3": "They are equal",
      "correct_answer": 1,
      "skill_id": 54,
      "difficulty_id": 2,
      "explanation": "Each beaker is the same size. Vase A has 3 beakers, B has 4 beakers, C has 2 beakers. B receives the most water, so Vase B has the greatest volume.",
      "hints": ["Count the beakers poured into each vase.", "More beakers of the same size means more water."],
      "source": "Henry Park 2025 P2 Quiz 4-5-6 Q10",
      "image_needed": true,
      "image_options": false,
      "image_file": "q10.png",
      "notes": "Original is a fill-in-the-blank ('Vase ___ has the greatest'); converted to MCQ. image_page=5, bottom (vases A/B/C with 3/4/2 beakers). Key=B (index 1)."
    },
    {
      "n": 11,
      "type_id": 2,
      "question": "Arrange the following fractions in order. Begin with the greatest fraction. 1/6, 1/11, 1/2, 1/10",
      "answer0": "1/2",
      "answer1": "1/6",
      "answer2": "1/10",
      "answer3": "1/11",
      "correct_answer": null,
      "skill_id": 43,
      "difficulty_id": 2,
      "explanation": "Same numerator (1), so the smaller the denominator the larger the fraction. Greatest to smallest: 1/2, 1/6, 1/10, 1/11.",
      "hints": ["Same numerator, so compare denominators.", "Smaller denominator means a bigger fraction."],
      "source": "Henry Park 2025 P2 Quiz 4-5-6 Q11",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Ordering task -> FIB, one blank per position greatest to smallest. Key=1/2, 1/6, 1/10, 1/11."
    },
    {
      "n": 12,
      "type_id": 2,
      "question": "Containers A, B, C and D are of the same size. Glass bottles of the same size are completely filled. Daniel pours them into different containers. Container A: 1 l, 1 l, 1 l. Container B: 1 l. Container C: 1 l, 1 l, 1 l, 1 l, 1 l. Container D: 1 l, 1 l, 1 l. a) The volume of water in Container [?] is the same as the volume of water in Container [?]. b) Container [?] has more water than Container D.",
      "answer0": "A",
      "answer1": "D",
      "answer2": "C",
      "answer3": null,
      "correct_answer": null,
      "skill_id": 53,
      "difficulty_id": 2,
      "explanation": "A has 3 l, B has 1 l, C has 5 l, D has 3 l. a) A and D both hold 3 l, so they are equal. b) C holds 5 l, more than D's 3 l.",
      "hints": ["Count the 1 l bottles poured into each container.", "A=3, B=1, C=5, D=3."],
      "source": "Henry Park 2025 P2 Quiz 4-5-6 Q12",
      "image_needed": true,
      "image_options": false,
      "image_file": "q12.png",
      "notes": "Three blanks total (a: two blanks A & D, b: one blank C). image_page=6, middle (Containers A-D with arrows showing 1l bottles). Key a) A, D  b) C."
    },
    {
      "n": 13,
      "type_id": 2,
      "question": "The figure is made up of a square and 3 triangles of the same size. Each triangle is 1/2 of the square. a) What fraction of the figure is shaded? b) What fraction of the figure needs to be shaded to make 1 whole?",
      "answer0": "4/5",
      "answer1": "1/5",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 41,
      "difficulty_id": 3,
      "explanation": "Each triangle is half a square. The square = 2 halves; 3 triangles = 3 halves; total = 5 halves = 5 equal parts. 4 parts are shaded, so a) 4/5 is shaded. b) 5/5 - 4/5 = 1/5 more is needed to make 1 whole.",
      "hints": ["Express everything in equal half-square parts: total is 5 parts.", "Count shaded parts for (a); the rest is needed for (b)."],
      "source": "Henry Park 2025 P2 Quiz 4-5-6 Q13",
      "image_needed": true,
      "image_options": false,
      "image_file": "q13.png",
      "notes": "Two blanks (a then b). image_page=7, below stem (square + 3 same-size triangles, some shaded). Key a) 4/5  b) 1/5."
    },
    {
      "n": 14,
      "type_id": 2,
      "question": "Circle three different fractions that add up to 1 whole. 1/8, 2/8, 3/8, 5/8, 7/8",
      "answer0": "1/8",
      "answer1": "2/8",
      "answer2": "5/8",
      "answer3": null,
      "correct_answer": null,
      "skill_id": 44,
      "difficulty_id": 3,
      "explanation": "Need three of the eighths summing to 8/8. 1 + 2 + 5 = 8, so 1/8 + 2/8 + 5/8 = 8/8 = 1 whole.",
      "hints": ["1 whole = 8/8.", "Find three different numerators that add to 8: 1 + 2 + 5 = 8."],
      "source": "Henry Park 2025 P2 Quiz 4-5-6 Q14",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Original says 'circle three', but the answer is a definite set of values, so FIB with three blanks. Key=1/8, 2/8, 5/8."
    },
    {
      "n": 15,
      "type_id": 2,
      "question": "How many 5-litre bottles are needed to fill a 50-litre fish tank completely? [?]",
      "answer0": "10",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 54,
      "difficulty_id": 1,
      "explanation": "50 / 5 = 10 bottles.",
      "hints": ["Divide the tank capacity by the bottle size.", "50 / 5 = 10."],
      "source": "Henry Park 2025 P2 Quiz 4-5-6 Q15",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Figure is decorative (5l bottle + 50l tank); not needed to solve. Key=10."
    },
    {
      "n": 16,
      "type_id": 2,
      "question": "Mike wants to have 7/12 of the figure shaded. How many more rectangles must he shade? [?]",
      "answer0": "2",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 41,
      "difficulty_id": 2,
      "explanation": "The strip has 12 rectangles. 7/12 means 7 shaded. 5 are already shaded, so he must shade 7 - 5 = 2 more.",
      "hints": ["Count the rectangles already shaded.", "7/12 means 7 shaded in total; subtract those already shaded."],
      "source": "Henry Park 2025 P2 Quiz 4-5-6 Q16",
      "image_needed": true,
      "image_options": false,
      "image_file": "q16.png",
      "notes": "image_page=8, below stem (strip of 12 rectangles, 5 already shaded). Need 7 total. Key=2."
    },
    {
      "n": 17,
      "type_id": 2,
      "question": "Jake bought some juice from the supermarket. He drank 3 l of the juice and poured the rest into all the bottles shown. Each bottle holds 2 l and there are 5 bottles. How much juice did he have at first? [?]",
      "answer0": "13 l",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 54,
      "difficulty_id": 2,
      "explanation": "Juice in bottles = 2 l x 5 = 10 l. He also drank 3 l. At first: 10 + 3 = 13 l.",
      "hints": ["Find the total juice in the bottles first.", "Add back the juice he drank."],
      "source": "Henry Park 2025 P2 Quiz 4-5-6 Q17",
      "image_needed": true,
      "image_options": false,
      "image_file": "q17.png",
      "notes": "Bottle count/size given in the figure (5 bottles, 2l each) so I added it to the stem since needed to solve. image_page=9, below stem. Key=13L (2x5=10, +3=13)."
    },
    {
      "n": 18,
      "type_id": 2,
      "question": "A tank had 36 l of water. Mary used 9 l of water and her sister used 12 l of water. How much water was left in the tank? [?]",
      "answer0": "15 l",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 54,
      "difficulty_id": 2,
      "explanation": "Total used = 9 + 12 = 21 l. Left = 36 - 21 = 15 l.",
      "hints": ["Add the two amounts used.", "Subtract that total from 36."],
      "source": "Henry Park 2025 P2 Quiz 4-5-6 Q18",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Figure is decorative (tank labelled 36l); not needed to solve. Key=15L (9+12=21, 36-21=15)."
    }
  ]
}