{
  "paper": {
    "school": "CHIJ St Nicholas Girls' School",
    "year": 2022,
    "level": "P1",
    "label": "Topical Review 1",
    "source_prefix": "CHIJ 2022 P1 Topical Review 1",
    "has_answer_key": true
  },
  "questions": [
    {
      "n": 1,
      "type_id": 1,
      "question": "How many triangles are there?",
      "answer0": "1",
      "answer1": "2",
      "answer2": "3",
      "answer3": "4",
      "correct_answer": 3,
      "skill_id": 1,
      "difficulty_id": 1,
      "explanation": "Count the triangles in the figure. The answer key gives 4.",
      "hints": ["Look only for triangles (3 straight sides).", "Point to each one as you count."],
      "source": "CHIJ 2022 P1 Topical Review 1 Q1",
      "image_needed": true,
      "image_options": false,
      "image_file": null,
      "image_page": 2,
      "image_loc": "below the question, box of mixed shapes (triangles, circles, square, diamonds, rectangle)",
      "notes": "Counting question — figure required. Answer key = 4 (option index 3). Visible upright/inverted triangles plus the bottom-right one; trust key, verify on crop."
    },
    {
      "n": 2,
      "type_id": 1,
      "question": "The letter [?] is after C.",
      "answer0": "A",
      "answer1": "I",
      "answer2": "O",
      "answer3": "U",
      "correct_answer": 0,
      "skill_id": 7,
      "difficulty_id": 2,
      "explanation": "Reading the word GRACIOUS left to right, identify the letter immediately after C. Answer key gives option 1 (A).",
      "hints": ["Read GRACIOUS one letter at a time.", "Find C, then look at the very next letter."],
      "source": "CHIJ 2022 P1 Topical Review 1 Q2",
      "image_needed": true,
      "image_options": false,
      "image_file": null,
      "image_page": 2,
      "image_loc": "boxed word GRACIOUS, middle of page above the options",
      "notes": "DISCREPANCY: word GRACIOUS reads G-R-A-C-I-O-U-S, so the letter after C is I = option (2), but the printed answer key states Q2 = 1 (A). Recorded correct_answer per the printed key (index 0); flag for human review."
    },
    {
      "n": 3,
      "type_id": 1,
      "question": "Which fruit is fourth from the right?",
      "answer0": "mangosteen",
      "answer1": "orange",
      "answer2": "durian",
      "answer3": "apple",
      "correct_answer": 3,
      "skill_id": 7,
      "difficulty_id": 2,
      "explanation": "Row from left: strawberry, lemon, apple, orange, durian, mangosteen. Counting from the right: 1st mangosteen, 2nd durian, 3rd orange, 4th apple. Answer key = 4 (apple).",
      "hints": ["Start counting from the right side.", "Fourth from the right, not the left."],
      "source": "CHIJ 2022 P1 Topical Review 1 Q3",
      "image_needed": true,
      "image_options": false,
      "image_file": null,
      "image_page": 3,
      "image_loc": "row of six fruit pictures with labels, left-to-right, near top of page",
      "notes": "Ordinal-position question. Answer key = 4 (apple, index 3)."
    },
    {
      "n": 4,
      "type_id": 1,
      "question": "What number is 1 less than 15?",
      "answer0": "6",
      "answer1": "14",
      "answer2": "16",
      "answer3": "4",
      "correct_answer": 1,
      "skill_id": 4,
      "difficulty_id": 1,
      "explanation": "1 less than 15 is 15 - 1 = 14. Answer key = 2 (14).",
      "hints": ["'1 less' means count back one.", "15 - 1 = ?"],
      "source": "CHIJ 2022 P1 Topical Review 1 Q4",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_loc": null,
      "notes": "Answer key = 2 (14, index 1)."
    },
    {
      "n": 5,
      "type_id": 1,
      "question": "What is the length of the comb?",
      "answer0": "5 units",
      "answer1": "6 units",
      "answer2": "8 units",
      "answer3": "4 units",
      "correct_answer": 0,
      "skill_id": 23,
      "difficulty_id": 2,
      "explanation": "Measure the comb against the row of equal squares, each square = 1 unit. Answer key = 1 (5 units).",
      "hints": ["Each box stands for 1 unit.", "Count how many boxes the comb spans."],
      "source": "CHIJ 2022 P1 Topical Review 1 Q5",
      "image_needed": true,
      "image_options": false,
      "image_file": null,
      "image_page": 4,
      "image_loc": "comb drawn above a row of unit squares, upper-middle of page",
      "notes": "Non-standard-unit length measurement; figure required. Answer key = 1 (5 units, index 0)."
    },
    {
      "n": 6,
      "type_id": 1,
      "question": "[?] + 3 = 12. What is the missing number in the box?",
      "answer0": "15",
      "answer1": "10",
      "answer2": "9",
      "answer3": "8",
      "correct_answer": 2,
      "skill_id": 13,
      "difficulty_id": 1,
      "explanation": "12 - 3 = 9, so the box is 9. Answer key = 3 (9).",
      "hints": ["Use the related subtraction: 12 - 3.", "What plus 3 makes 12?"],
      "source": "CHIJ 2022 P1 Topical Review 1 Q6",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_loc": null,
      "notes": "MCQ as printed (4 numeric options). Answer key = 3 (9, index 2)."
    },
    {
      "n": 7,
      "type_id": 0,
      "question": "Circle the shape that comes next.",
      "answer0": null,
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 6,
      "difficulty_id": 2,
      "explanation": "Pattern is filled-triangle, open-circle, filled-triangle repeating; the next shape is a filled triangle.",
      "hints": ["Find the repeating unit.", "What comes right after the last shape?"],
      "source": "CHIJ 2022 P1 Topical Review 1 Q7",
      "image_needed": true,
      "image_options": false,
      "image_file": null,
      "image_page": 5,
      "image_loc": "shape pattern row with a two-cell choice box (circle / triangle) at the right",
      "notes": "Genuinely interactive (circle one of two given pictures) — no text/value answer, set type_id 0; SKIPPED on insert. Answer key: the filled triangle."
    },
    {
      "n": 8,
      "type_id": 0,
      "question": "(a) Cross out the fifth rabbit. (b) Circle seven cupcakes.",
      "answer0": null,
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 7,
      "difficulty_id": 1,
      "explanation": "(a) Counting from 1st (rightmost, labelled '1st'), cross the 5th rabbit. (b) Circle any seven of the cupcakes.",
      "hints": ["The rightmost rabbit is labelled 1st.", "Count seven cupcakes and ring them."],
      "source": "CHIJ 2022 P1 Topical Review 1 Q8",
      "image_needed": true,
      "image_options": false,
      "image_file": null,
      "image_page": 5,
      "image_loc": "two rows: 8 rabbits (1st labelled at right) and 9 cupcakes",
      "notes": "Genuinely interactive (cross-out / circle drawing) — type_id 0, SKIPPED on insert. Answer key: cross the 5th rabbit (counting from the right where '1st' is marked); circle seven cupcakes."
    },
    {
      "n": 9,
      "type_id": 2,
      "question": "Fill in the missing numbers. 16, 15, 14, 13, [?], 11, 10, [?], 8",
      "answer0": "12",
      "answer1": "9",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 6,
      "difficulty_id": 1,
      "explanation": "The pattern counts down by 1: ...13, 12, 11, 10, 9, 8. Missing values are 12 and 9. Answer key = 12, 9.",
      "hints": ["The numbers go down by 1 each time.", "What comes between 13 and 11? Between 10 and 8?"],
      "source": "CHIJ 2022 P1 Topical Review 1 Q9",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_loc": null,
      "notes": "Number-pattern fill-in-blank, two blanks in order. Answer key = 12, 9."
    },
    {
      "n": 10,
      "type_id": 2,
      "question": "Arrange the numbers in order. Begin with the greatest. 13, 15, 18, 14 [?], [?], [?], [?]",
      "answer0": "18",
      "answer1": "15",
      "answer2": "14",
      "answer3": "13",
      "correct_answer": null,
      "skill_id": 5,
      "difficulty_id": 2,
      "explanation": "Ordering 13, 15, 18, 14 from greatest to smallest gives 18, 15, 14, 13. Answer key = 18, 15, 14, 13.",
      "hints": ["Greatest first means the biggest number leads.", "Compare the tens then the ones."],
      "source": "CHIJ 2022 P1 Topical Review 1 Q10",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_loc": null,
      "notes": "Ordering task converted to FIB, four blanks greatest-to-smallest. Numbers given (13, 15, 18, 14) shown in circles. Answer key = 18, 15, 14, 13."
    },
    {
      "n": 11,
      "type_id": 0,
      "question": "Balloon B has a longer string than Balloon A. Draw the string of balloon B.",
      "answer0": null,
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 23,
      "difficulty_id": 1,
      "explanation": "Draw a string under Balloon B that is longer than the string already drawn under Balloon A.",
      "hints": ["Compare to Balloon A's string.", "Longer means it should reach further down."],
      "source": "CHIJ 2022 P1 Topical Review 1 Q11",
      "image_needed": true,
      "image_options": false,
      "image_file": null,
      "image_page": 7,
      "image_loc": "two balloons A and B; A has a long string, B has only a short stub",
      "notes": "Genuinely interactive (draw) — type_id 0, SKIPPED on insert. Answer key: B's string drawn longer than A's."
    },
    {
      "n": 12,
      "type_id": 2,
      "question": "Jen, Dan, Anna and Tom are queuing up for the school bus. Tom is second in the queue. Jen is between Tom and Anna. Fill in the names of the children in the correct order. [?], [?], [?], [?]",
      "answer0": "Anna",
      "answer1": "Jen",
      "answer2": "Tom",
      "answer3": "Dan",
      "correct_answer": null,
      "skill_id": 7,
      "difficulty_id": 3,
      "explanation": "Tom is 2nd. Jen is between Tom and Anna, so Anna-Jen-Tom from front, leaving Dan last: Anna, Jen, Tom, Dan (front to bus). Answer key = Anna, Jen, Tom, Dan.",
      "hints": ["Place Tom in the 2nd spot first.", "Jen sits next to both Tom and Anna."],
      "source": "CHIJ 2022 P1 Topical Review 1 Q12",
      "image_needed": true,
      "image_options": false,
      "image_file": null,
      "image_page": 7,
      "image_loc": "four empty name boxes above four children, facing a 'School Bus' sign on the right",
      "notes": "Logic/ordinal ordering converted to FIB, four blanks in queue order (front-of-queue/nearest the bus first per key). Answer key = Anna, Jen, Tom, Dan. Image gives queue direction toward the bus sign."
    },
    {
      "n": 13,
      "type_id": 2,
      "question": "(a) 18 - [?] = 9. (b) Write '+' or '-': 7 [?] 4 = 11",
      "answer0": "9",
      "answer1": "+",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 13,
      "difficulty_id": 1,
      "explanation": "(a) 18 - 9 = 9. (b) 7 + 4 = 11, so the sign is +. Answer key = 9 and +.",
      "hints": ["(a) 18 take away what leaves 9?", "(b) Does 7 and 4 need to grow or shrink to reach 11?"],
      "source": "CHIJ 2022 P1 Topical Review 1 Q13",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_loc": null,
      "notes": "Two-part fill-in-blank. Answer key: (a) 9, (b) +."
    },
    {
      "n": 14,
      "type_id": 2,
      "question": "During a class performance task, Fabian took two cards to make 16. The cards show 4, 9, 13, 7. Which two cards did he take? [?] and [?]",
      "answer0": "9",
      "answer1": "7",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 13,
      "difficulty_id": 2,
      "explanation": "9 + 7 = 16, so the two cards are 9 and 7. Answer key = 9 and 7.",
      "hints": ["Try adding pairs of the cards.", "Which pair sums to 16?"],
      "source": "CHIJ 2022 P1 Topical Review 1 Q14",
      "image_needed": true,
      "image_options": false,
      "image_file": null,
      "image_page": 8,
      "image_loc": "four number cards (4, 9, 13, 7) in a row, middle of page",
      "notes": "Originally cross-out two cards; converted to FIB (two number blanks) since answer is a definite pair. Order not significant; answer key = 9 and 7. Image shows the card values."
    },
    {
      "n": 15,
      "type_id": 2,
      "question": "(a) Strip [?] and Strip [?] are of the same length. (b) Strip [?] is shorter than Strip E. It is longer than Strip A.",
      "answer0": "C",
      "answer1": "D",
      "answer2": "B",
      "answer3": null,
      "correct_answer": null,
      "skill_id": 23,
      "difficulty_id": 2,
      "explanation": "Comparing strip lengths on the unit grid: Strips C and D are equal; Strip B is shorter than E but longer than A. Answer key = C and D; B.",
      "hints": ["Count grid units for each strip.", "Two strips with the same count are equal length."],
      "source": "CHIJ 2022 P1 Topical Review 1 Q15",
      "image_needed": true,
      "image_options": false,
      "image_file": null,
      "image_page": 9,
      "image_loc": "grid of shaded horizontal strips (A-E) on a unit grid, each box = 1 unit",
      "notes": "Length comparison FIB, three blanks (a: two strips; b: one strip). Answer key: (a) C and D (order may vary), (b) B. Figure required to read strip lengths."
    },
    {
      "n": 16,
      "type_id": 2,
      "question": "Michelle has 12 hair bows. Her sister gives her 5 more hair bows. How many hair bows does Michelle have now? Michelle has [?] hair bows now.",
      "answer0": "17",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 15,
      "difficulty_id": 1,
      "explanation": "12 + 5 = 17. Michelle has 17 hair bows now. Answer key = 12 + 5 = 17.",
      "hints": ["'5 more' means add.", "12 + 5 = ?"],
      "source": "CHIJ 2022 P1 Topical Review 1 Q16",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_loc": null,
      "notes": "1-step add/sub word problem. Figure (12 bows + number-equation boxes) is decorative; the answer is the count. Answer key = 12 + 5 = 17; final value 17."
    },
    {
      "n": 17,
      "type_id": 2,
      "question": "There are 14 leaves on a plant. The caterpillars eat up some of them. 8 leaves are left on the plant. How many leaves do the caterpillars eat? The caterpillars eat [?] leaves.",
      "answer0": "6",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 15,
      "difficulty_id": 2,
      "explanation": "14 - 8 = 6. The caterpillars eat 6 leaves. Answer key = 14 - 8 = 6.",
      "hints": ["Start with 14 and take away the 8 that are left.", "14 - 8 = ?"],
      "source": "CHIJ 2022 P1 Topical Review 1 Q17",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_loc": null,
      "notes": "1-step subtraction word problem. Figure (14 leaves + number-equation boxes) is decorative; the answer is the count. Answer key = 14 - 8 = 6; final value 6."
    }
  ]
}