{
  "paper": {
    "school": "Henry Park",
    "year": 2023,
    "level": "P2",
    "label": "Quiz 4",
    "source_prefix": "Henry Park 2023 P2 Quiz 4",
    "has_answer_key": true
  },
  "questions": [
    {
      "n": 1,
      "type_id": 1,
      "question": "Which of the following figures is divided into equal parts?",
      "answer0": "Figure 1",
      "answer1": "Figure 2",
      "answer2": "Figure 3",
      "answer3": "Figure 4",
      "correct_answer": 1,
      "skill_id": 41,
      "difficulty_id": 1,
      "explanation": "Figure 2 (the kite/rhombus) is split by its two diagonals into 4 equal parts. The triangle, the house-shape and the rectangle in the other options are split into unequal parts.",
      "hints": ["Equal parts must all be exactly the same size and shape.", "Check the divided rectangle: the strips are different widths, so they are not equal."],
      "source": "Henry Park 2023 P2 Quiz 4 Q1",
      "image_needed": true,
      "image_options": true,
      "image_file": null,
      "notes": "Image-option MCQ: 4 figures (triangle, kite divided by diagonals, house shape, rectangle in unequal strips). Answer key = 2. Crop each option to q1_opt0..q1_opt3.png from page 1 (lower half)."
    },
    {
      "n": 2,
      "type_id": 1,
      "question": "Dan poured all the water from Bottles E, F, G and H into cups of the same size. Each cup had the same amount of water in it. Which bottle has the greatest volume of water?",
      "answer0": "E",
      "answer1": "F",
      "answer2": "G",
      "answer3": "H",
      "correct_answer": 0,
      "skill_id": 53,
      "difficulty_id": 1,
      "explanation": "Each cup holds the same amount, so the bottle filling the most cups holds the most water. Bottle E filled 7 cups, F filled 5, G filled 4 and H filled 6, so E has the greatest volume.",
      "hints": ["More cups means more water, since every cup holds the same amount.", "Count the cups beside each bottle and compare."],
      "source": "Henry Park 2023 P2 Quiz 4 Q2",
      "image_needed": true,
      "image_options": false,
      "image_file": "q2.png",
      "notes": "Answer key = 1 (option 1 = E). Figure: 2x2 panel of bottles E/G/F/H each with cups beside, page 2 middle. Count to verify cups per bottle."
    },
    {
      "n": 3,
      "type_id": 1,
      "question": "How many litres of water can the pail hold?",
      "answer0": "6",
      "answer1": "2",
      "answer2": "8",
      "answer3": "4",
      "correct_answer": 2,
      "skill_id": 50,
      "difficulty_id": 2,
      "explanation": "One bottle holds 2 l (shown by the beaker reading 2 l). The pail is filled by 4 such bottles, so the pail holds 4 x 2 l = 8 l.",
      "hints": ["First find how much one bottle holds: the beaker shows 2 l.", "The pail = 4 bottles, so multiply 4 x 2."],
      "source": "Henry Park 2023 P2 Quiz 4 Q3",
      "image_needed": true,
      "image_options": false,
      "image_file": "q3.png",
      "notes": "Answer key = 3 (option 3 = 8). Figure: 1 bottle -> 2 l beaker, and pail -> 4 bottles, page 3 upper-middle."
    },
    {
      "n": 4,
      "type_id": 1,
      "question": "Emma ate 3/11 of a pie. Liam ate 2/11 of the same pie. What fraction of the pie was eaten?",
      "answer0": "2/11",
      "answer1": "3/11",
      "answer2": "4/11",
      "answer3": "5/11",
      "correct_answer": 3,
      "skill_id": 44,
      "difficulty_id": 1,
      "explanation": "Add the like fractions: 3/11 + 2/11 = 5/11 of the pie was eaten.",
      "hints": ["The denominators are the same, so just add the numerators.", "3 + 2 = 5, keeping the denominator 11."],
      "source": "Henry Park 2023 P2 Quiz 4 Q4",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key = 4 (option 4 = 5/11)."
    },
    {
      "n": 5,
      "type_id": 1,
      "question": "Jane shaded a fraction bar. The shaded parts were greater than 2/9 but smaller than 6/9. Which fraction bar did Jane shade?",
      "answer0": "Bar 1",
      "answer1": "Bar 2",
      "answer2": "Bar 3",
      "answer3": "Bar 4",
      "correct_answer": 1,
      "skill_id": 43,
      "difficulty_id": 2,
      "explanation": "Each bar has 9 parts. Bar 2 has 4 parts shaded = 4/9, which is between 2/9 and 6/9. Bar 1 has 1/9 (too small), Bar 3 has 6/9 (not smaller than 6/9) and Bar 4 has 7/9 (too big).",
      "hints": ["Count the shaded parts out of 9 in each bar.", "You need a count that is more than 2 but fewer than 6 parts shaded."],
      "source": "Henry Park 2023 P2 Quiz 4 Q5",
      "image_needed": true,
      "image_options": true,
      "image_file": null,
      "notes": "Image-option MCQ: 4 nine-part fraction bars with differing shaded counts, page 4 lower half. Answer key = 2 (bar with 4/9 shaded). Crop each bar to q5_opt0..q5_opt3.png."
    },
    {
      "n": 6,
      "type_id": 2,
      "question": "The figure is made of identical triangles. What fraction of the figure is not shaded? [?]",
      "answer0": "9/12",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 42,
      "difficulty_id": 2,
      "explanation": "The figure has 12 identical triangles. 3 are shaded, so 12 - 3 = 9 are not shaded, giving 9/12.",
      "hints": ["Count the total number of triangles, then count how many are shaded.", "Not shaded = total minus shaded; write it as a fraction over 12."],
      "source": "Henry Park 2023 P2 Quiz 4 Q6",
      "image_needed": true,
      "image_options": false,
      "image_file": "q6.png",
      "notes": "Answer key = 9/12. Figure: row of identical triangles (12 total, 3 shaded), page 5 upper area. Count to verify."
    },
    {
      "n": 7,
      "type_id": 2,
      "question": "1 - 2/6 = [?]",
      "answer0": "4/6",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 44,
      "difficulty_id": 1,
      "explanation": "Write 1 as 6/6. Then 6/6 - 2/6 = 4/6.",
      "hints": ["Rename 1 whole as 6/6 so the denominators match.", "Subtract the numerators: 6 - 2 = 4."],
      "source": "Henry Park 2023 P2 Quiz 4 Q7",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key = 4/6."
    },
    {
      "n": 8,
      "type_id": 2,
      "question": "5/7 + 2/7 = [?]",
      "answer0": "7/7",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 44,
      "difficulty_id": 1,
      "explanation": "Add the like fractions: 5/7 + 2/7 = 7/7.",
      "hints": ["The denominators are the same, so add only the numerators.", "5 + 2 = 7, keeping the denominator 7."],
      "source": "Henry Park 2023 P2 Quiz 4 Q8",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key = 7/7 (left as 7/7 per key, not simplified to 1)."
    },
    {
      "n": 9,
      "type_id": 0,
      "question": "Circle the greatest fraction.",
      "answer0": null,
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 43,
      "difficulty_id": 1,
      "explanation": "The fractions 1/8, 7/8 and 3/8 all have denominator 8, so the greatest is the one with the largest numerator: 7/8.",
      "hints": ["When the denominators are the same, compare the numerators.", "7 is the biggest numerator among 1, 7 and 3."],
      "source": "Henry Park 2023 P2 Quiz 4 Q9",
      "image_needed": true,
      "image_options": false,
      "image_file": "q9.png",
      "notes": "Interactive circle task -> type_id 0, skipped on insert. Answer key = 7/8. Fractions shown in a box: 1/8, 7/8, 3/8 (page 6 top)."
    },
    {
      "n": 10,
      "type_id": 2,
      "question": "Megan poured 4 bottles of 5-litre oil into an empty tank. How many litres of oil did the tank have in the end? [?]",
      "answer0": "20",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 54,
      "difficulty_id": 2,
      "explanation": "Each bottle holds 5 l and there are 4 bottles: 4 x 5 l = 20 l.",
      "hints": ["Find the total of 4 equal amounts of 5 litres.", "Multiply: 4 x 5 = 20."],
      "source": "Henry Park 2023 P2 Quiz 4 Q10",
      "image_needed": true,
      "image_options": false,
      "image_file": "q10.png",
      "notes": "Answer key = 20L (answer box marked in litres). Figure: tank + 4 bottles labelled 5 l, page 6 middle. Answer is 20 (litres)."
    },
    {
      "n": 11,
      "type_id": 2,
      "question": "(a) How many quarters make 1 whole? [?] (b) How many quarters are there in 3 wholes? [?]",
      "answer0": "4",
      "answer1": "12",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 42,
      "difficulty_id": 1,
      "explanation": "(a) 1 whole is split into 4 quarters, so 4 quarters make 1 whole. (b) 3 wholes have 3 x 4 = 12 quarters.",
      "hints": ["A quarter means 1 of 4 equal parts.", "For 3 wholes, multiply the quarters in one whole by 3."],
      "source": "Henry Park 2023 P2 Quiz 4 Q11",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key = a)4 b)12. Helper rectangles are blank working aids only, not required for the answer."
    },
    {
      "n": 12,
      "type_id": 1,
      "question": "Beakers A, B and C are of the same size. Arrange the beakers A, B and C in order, beginning with the beaker that has the greatest volume of water.",
      "answer0": "B, C, A",
      "answer1": "A, B, C",
      "answer2": "C, B, A",
      "answer3": "A, C, B",
      "correct_answer": 0,
      "skill_id": 53,
      "difficulty_id": 2,
      "explanation": "The beakers are the same size, so compare water levels. B has the highest level, then C, then A: B, C, A. (Part a: B has more water than C.)",
      "hints": ["Same-size beakers means a higher water line holds more water.", "Order from the highest water level to the lowest."],
      "source": "Henry Park 2023 P2 Quiz 4 Q12",
      "image_needed": true,
      "image_options": false,
      "image_file": "q12.png",
      "notes": "Letter answers -> made MCQ (ordering options). Answer key: (a) B has more water than C; (b) ordering greatest-first = beaker B, beaker C, beaker A => option 0. Figure: 3 beakers A/B/C with water levels, page 8 top."
    },
    {
      "n": 13,
      "type_id": 0,
      "question": "Circle three fractions that add up to 10/12.",
      "answer0": null,
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 44,
      "difficulty_id": 2,
      "explanation": "Choose three of the like fractions whose numerators total 10: 3/12 + 5/12 + 2/12 = 10/12.",
      "hints": ["All fractions are twelfths, so find three numerators that add to 10.", "3 + 5 + 2 = 10."],
      "source": "Henry Park 2023 P2 Quiz 4 Q13",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Interactive circle task -> type_id 0, skipped on insert. Choices given as text: 3/12, 7/12, 5/12, 2/12, 4/12. Answer key = 3/12, 5/12, 2/12."
    },
    {
      "n": 14,
      "type_id": 2,
      "question": "Arrange the following fractions in order. Begin with the smallest fraction. 1/2, 1/7, 1/4, 1/10 [?], [?], [?], [?]",
      "answer0": "1/10",
      "answer1": "1/7",
      "answer2": "1/4",
      "answer3": "1/2",
      "correct_answer": null,
      "skill_id": 43,
      "difficulty_id": 2,
      "explanation": "For unit fractions, the larger the denominator the smaller the fraction. So smallest to largest: 1/10, 1/7, 1/4, 1/2.",
      "hints": ["These are unit fractions (numerator 1); a bigger bottom number means a smaller fraction.", "Order the denominators from largest to smallest to go smallest fraction first."],
      "source": "Henry Park 2023 P2 Quiz 4 Q14",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Ordering -> FIB, smallest first. Answer key = 1/10, 1/7, 1/4, 1/2. Fractions shown in heart shapes (page 9) but readable as text."
    },
    {
      "n": 15,
      "type_id": 2,
      "question": "Container A contains 28 l of water. Container B contains 12 l of water more than Container A. What is the total volume of water in Containers A and B? [?]",
      "answer0": "68",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 54,
      "difficulty_id": 2,
      "explanation": "Container B = 28 + 12 = 40 l. Total = 28 + 40 = 68 l.",
      "hints": ["First find Container B: it has 12 l more than A's 28 l.", "Then add both containers together."],
      "source": "Henry Park 2023 P2 Quiz 4 Q15",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key = 68L (answer box in litres). Container pictures are decorative; all values given in text. Answer is 68 (litres)."
    },
    {
      "n": 16,
      "type_id": 2,
      "question": "How many more rectangles must be shaded so that 1/2 of the figure is shaded? [?]",
      "answer0": "2",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 42,
      "difficulty_id": 2,
      "explanation": "The grid has 6 rectangles, so half is 3. One rectangle is already shaded, so 3 - 1 = 2 more must be shaded.",
      "hints": ["Find half of the total number of rectangles in the figure.", "Subtract the rectangles already shaded from that half."],
      "source": "Henry Park 2023 P2 Quiz 4 Q16",
      "image_needed": true,
      "image_options": false,
      "image_file": "q16.png",
      "notes": "Answer key = 2. Figure is a partially shaded grid (6 cells) on page 11; the scanned figure is faint/overlaid with stray text, so re-scan/clean when cropping. Answer 'more rectangles' = 2."
    },
    {
      "n": 17,
      "type_id": 2,
      "question": "Madam Wong used 4 l of milk for baking each time. She baked 2 times a week. How many litres of milk did she use after baking for 3 weeks? [?]",
      "answer0": "24",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 54,
      "difficulty_id": 3,
      "explanation": "Per week: 4 l x 2 = 8 l. Over 3 weeks: 8 l x 3 = 24 l.",
      "hints": ["First find the milk used in one week (4 l each time, twice a week).", "Then multiply the weekly amount by 3 weeks."],
      "source": "Henry Park 2023 P2 Quiz 4 Q17",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key working: 4 x 2 = 8; 3 x 8 = 24. Madam Wong used 24L of milk for 3 weeks. Answer is 24 (litres)."
    },
    {
      "n": 18,
      "type_id": 2,
      "question": "Johnny had 48 l of fruit juice. He gave 32 l of fruit juice to Ken. He then shared the rest of the fruit juice equally with Mary. How many litres of fruit juice did Mary get? [?]",
      "answer0": "8",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 54,
      "difficulty_id": 3,
      "explanation": "Juice left after giving Ken: 48 - 32 = 16 l. Shared equally between Johnny and Mary: 16 / 2 = 8 l for Mary.",
      "hints": ["First find how much juice is left after Ken takes his share.", "'Shared equally with Mary' means split the remainder into 2 equal parts."],
      "source": "Henry Park 2023 P2 Quiz 4 Q18",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer key working: 48 - 32 = 16; 16 / 2 = 8. Mary got 8L of fruit juice. Answer is 8 (litres)."
    }
  ]
}