{
  "paper": {
    "school": "Ai Tong",
    "year": 2023,
    "level": "P1",
    "label": "Term 4 Mini Test 2",
    "source_prefix": "Ai Tong 2023 P1 Term 4 Mini Test 2",
    "has_answer_key": true
  },
  "questions": [
    {
      "n": 1,
      "type_id": 2,
      "question": "Count the cupcakes. Write in words: [?]. Write in tens and ones: [?] tens [?] ones.",
      "answer0": "eighty-six",
      "answer1": "8",
      "answer2": "6",
      "answer3": null,
      "correct_answer": null,
      "skill_id": 1,
      "difficulty_id": 2,
      "explanation": "There are 86 cupcakes. In words that is eighty-six. 86 = 8 tens and 6 ones.",
      "hints": ["Count the cupcakes in groups of ten.", "There are 8 full groups of ten and 6 left over."],
      "source": "Ai Tong 2023 P1 Term 4 Mini Test 2 Q1",
      "image_needed": true,
      "image_options": false,
      "image_file": "q1.png",
      "image_page": 1,
      "image_loc": "middle of page, the long box of cupcakes between the question and parts (a)/(b)",
      "notes": "Count to verify = 86 cupcakes (key: eighty-six; 8 tens 6 ones). Word answer kept as exact-match FIB per key; part (b) tens/ones are number-sense blanks."
    },
    {
      "n": 2,
      "type_id": 2,
      "question": "Numbers: 82, 54, 47, 69. (a) 70 is smaller than [?]. (b) Arrange the numbers in order. Begin with the smallest. [?], [?], [?], [?]",
      "answer0": "82",
      "answer1": "47",
      "answer2": "54",
      "answer3": "69",
      "correct_answer": null,
      "skill_id": 5,
      "difficulty_id": 2,
      "explanation": "70 is smaller than 82 (the only number above 70). Ordered smallest to greatest: 47, 54, 69, 82.",
      "hints": ["Which of the four numbers is bigger than 70?", "Compare the tens digit first when ordering."],
      "source": "Ai Tong 2023 P1 Term 4 Mini Test 2 Q2",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_loc": null,
      "notes": "Numbers shown in 4 decorative star shapes but are plain text, so no image needed. Ordering task converted to FIB (one blank per position). answer0 is part (a); answer1-3 plus answer0 give the order 47,54,69,82 (answer0=82 is the largest)."
    },
    {
      "n": 3,
      "type_id": 2,
      "question": "Complete the number patterns. (a) [?], 52, 55, 58, 61, 64. (b) 58, 48, 38, 28, [?], 8.",
      "answer0": "49",
      "answer1": "18",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 6,
      "difficulty_id": 2,
      "explanation": "(a) The pattern increases by 3 each time, so before 52 is 49. (b) The pattern decreases by 10 each time, so after 28 is 18.",
      "hints": ["Find how much the numbers change each step.", "(a) goes up by 3; (b) goes down by 10."],
      "source": "Ai Tong 2023 P1 Term 4 Mini Test 2 Q3",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_loc": null,
      "notes": "Pattern shown in boxes/banners but values are plain text; rendered as FIB. Key: (a) 49, (b) 18."
    },
    {
      "n": 4,
      "type_id": 2,
      "question": "Fill in the missing numbers. (a) 23 + 1[?] = [?]8. (b) 6[?] + 26 = [?]4.",
      "answer0": "5",
      "answer1": "3",
      "answer2": "8",
      "answer3": "9",
      "correct_answer": null,
      "skill_id": 14,
      "difficulty_id": 2,
      "explanation": "(a) 23 + 15 = 38, so the missing ones digit is 5 and the sum's tens digit is 3. (b) 68 + 26 = 94, so the missing ones digit is 8 and the sum's tens digit is 9.",
      "hints": ["Add the ones column first, then the tens column.", "(a) 23 + 15 = 38; (b) 68 + 26 = 94."],
      "source": "Ai Tong 2023 P1 Term 4 Mini Test 2 Q4",
      "image_needed": true,
      "image_options": false,
      "image_file": "q4.png",
      "image_page": 3,
      "image_loc": "upper part of page, the two Tens/Ones column-addition layouts for (a) and (b)",
      "notes": "Vertical column-addition with boxed missing digits; figure needed to show the Tens/Ones layout and which digits are blank. Key: (a) 23+15=38, (b) 68+26=94."
    },
    {
      "n": 5,
      "type_id": 2,
      "question": "Fill in the missing numbers. (a) 63 - [?] = 50. (b) Subtract 48 from 100. The answer is [?].",
      "answer0": "13",
      "answer1": "52",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 13,
      "difficulty_id": 2,
      "explanation": "(a) 63 - 13 = 50. (b) 100 - 48 = 52.",
      "hints": ["(a) What number do you take from 63 to leave 50?", "(b) Count up from 48 to 100, or subtract."],
      "source": "Ai Tong 2023 P1 Term 4 Mini Test 2 Q5",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_loc": null,
      "notes": "Key: (a) 13, (b) 52."
    },
    {
      "n": 6,
      "type_id": 2,
      "question": "Fill in the missing numbers. (a) 51 + 29 = [?]. (b) [?] is 5 more than 72.",
      "answer0": "80",
      "answer1": "77",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 13,
      "difficulty_id": 2,
      "explanation": "(a) 51 + 29 = 80. (b) 5 more than 72 is 72 + 5 = 77.",
      "hints": ["(a) Add the ones, then the tens.", "(b) '5 more than' means add 5."],
      "source": "Ai Tong 2023 P1 Term 4 Mini Test 2 Q6",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_loc": null,
      "notes": "Key: (a) 80, (b) 77."
    },
    {
      "n": 7,
      "type_id": 0,
      "question": "Colour the correct amount of money for the item. (a) item costs 65c. (b) item costs $1.",
      "answer0": null,
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 21,
      "difficulty_id": 2,
      "explanation": "(a) Colour coins totalling 65c: 50c + 10c + 5c (the answer key shows 50c, 10c and 5c circled). (b) Colour coins totalling $1: 50c + 20c + 20c + 10c (the answer key shows 50c, 20c, 20c, 10c circled).",
      "hints": [],
      "source": "Ai Tong 2023 P1 Term 4 Mini Test 2 Q7",
      "image_needed": true,
      "image_options": false,
      "image_file": "q7.png",
      "image_page": 4,
      "image_loc": "top half of page, the two-row boxed figure: rows of coins on the left, stapler (65c) and hole-punch ($1) on the right",
      "notes": "Genuinely interactive 'colour the coins' task with no value/sequence answer -> type_id 0 (skipped on insert). Answer per key: (a) colour 50c+10c+5c = 65c; (b) colour coins totalling $1 e.g. 50c+20c+20c+10c."
    },
    {
      "n": 8,
      "type_id": 2,
      "question": "Fill in the blanks with the correct number of coins. (a) 1 two-dollar note = [?] fifty-cent coins. (b) 1 fifty-dollar note = [?] five-dollar notes.",
      "answer0": "4",
      "answer1": "10",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 21,
      "difficulty_id": 2,
      "explanation": "(a) $2 = 200c; 200c / 50c = 4 fifty-cent coins. (b) $50 / $5 = 10 five-dollar notes.",
      "hints": ["(a) How many 50c make $2?", "(b) How many $5 make $50?"],
      "source": "Ai Tong 2023 P1 Term 4 Mini Test 2 Q8",
      "image_needed": true,
      "image_options": false,
      "image_file": "q8.png",
      "image_page": 4,
      "image_loc": "lower half of page, the note/coin pictures beside parts (a) and (b)",
      "notes": "Money-equivalence FIB; pictures of the $2 note, 50c coin, $50 note and $5 note accompany the text. Key: (a) 4, (b) 10."
    },
    {
      "n": 9,
      "type_id": 1,
      "question": "Toys: toy plane $15, toy robot $17, toy car $9, ball $18. Jake only has 2 five-dollar notes. Which one of the toys can he buy?",
      "answer0": "toy plane",
      "answer1": "toy robot",
      "answer2": "toy car",
      "answer3": "ball",
      "correct_answer": 2,
      "skill_id": 22,
      "difficulty_id": 2,
      "explanation": "Jake has 2 x $5 = $10. The only toy costing $10 or less is the toy car at $9.",
      "hints": ["How much money does Jake have in total?", "Which toy costs $10 or less?"],
      "source": "Ai Tong 2023 P1 Term 4 Mini Test 2 Q9",
      "image_needed": true,
      "image_options": false,
      "image_file": "q9.png",
      "image_page": 5,
      "image_loc": "top of page, the four toy pictures with price labels (toy plane $15, toy robot $17, toy car $9, ball $18)",
      "notes": "Paper has Q9(a) Jake and Q9(b) Mrs Lee. Modelled part (a) as this MCQ. Part (b) is captured as Q9b below. Answer key labels these answers under 'Q10' (key has Q9/Q10 swapped vs paper); mapped by content. Key part (a) = toy car."
    },
    {
      "n": 901,
      "type_id": 1,
      "question": "Toys: toy plane $15, toy robot $17, toy car $9, ball $18. Mrs Lee bought two toys for her son. One of the toys she bought was the toy robot. She spent $35 altogether. Mrs Lee bought the toy robot and the [?]",
      "answer0": "toy plane",
      "answer1": "toy car",
      "answer2": "ball",
      "answer3": "toy robot",
      "correct_answer": 2,
      "skill_id": 22,
      "difficulty_id": 2,
      "explanation": "Toy robot costs $17. $35 - $17 = $18, which is the price of the ball.",
      "hints": ["Subtract the toy robot's price from $35.", "Which toy costs $18?"],
      "source": "Ai Tong 2023 P1 Term 4 Mini Test 2 Q9b",
      "image_needed": true,
      "image_options": false,
      "image_file": "q9.png",
      "image_page": 5,
      "image_loc": "top of page, the same four toy pictures with price labels",
      "notes": "Part (b) of paper Q9, split into its own MCQ (n=901) since each part needs a distinct answer. Reuses the q9.png toy figure. Key = ball."
    },
    {
      "n": 10,
      "type_id": 2,
      "question": "Count and compare the money in Set A, Set B and Set C. (a) Set [?] shows the least amount of money. (b) Set A has $[?] more than Set C.",
      "answer0": "B",
      "answer1": "14",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 21,
      "difficulty_id": 3,
      "explanation": "Count each set; Set B holds the least amount of money. Set A's total minus Set C's total = $14.",
      "hints": ["Add up the notes and coins in each set.", "Subtract Set C's total from Set A's total."],
      "source": "Ai Tong 2023 P1 Term 4 Mini Test 2 Q10",
      "image_needed": true,
      "image_options": false,
      "image_file": "q10.png",
      "image_page": 6,
      "image_loc": "main figure, the three stacked boxes labelled Set A, Set B and Set C each containing note/coin pictures",
      "notes": "Key (labelled 'Q9' in the answer page, swapped vs paper): (a) Set B is least, (b) $14. Note denominations are hard to read in the low-res scan; values taken from the authoritative answer key. Figure required to count."
    },
    {
      "n": 11,
      "type_id": 2,
      "question": "Sarah has 12 cookies. Ali has 6 more cookies than Sarah. How many cookies does Ali have? Ali has [?] cookies.",
      "answer0": "18",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 15,
      "difficulty_id": 1,
      "explanation": "'6 more than' means add: 12 + 6 = 18 cookies.",
      "hints": ["'6 more' means you add 6.", "12 + 6 = ?"],
      "source": "Ai Tong 2023 P1 Term 4 Mini Test 2 Q11",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_loc": null,
      "notes": "Key: 12 + 6 = 18."
    },
    {
      "n": 12,
      "type_id": 2,
      "question": "Ming Li had 20 lollipops. He gave some lollipops to his brother. He had 9 lollipops left. How many lollipops did he give to his brother? Ming Li gave [?] lollipops to his brother.",
      "answer0": "11",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 15,
      "difficulty_id": 1,
      "explanation": "20 - 9 = 11 lollipops given away.",
      "hints": ["Start with 20 and take away the 9 left.", "20 - 9 = ?"],
      "source": "Ai Tong 2023 P1 Term 4 Mini Test 2 Q12",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_loc": null,
      "notes": "Key: 20 - 9 = 11."
    },
    {
      "n": 13,
      "type_id": 2,
      "question": "Nan Xi made some pizzas. She gave 5 pizzas to her friend and had 11 pizzas left. How many pizzas did Nan Xi make? Nan Xi made [?] pizzas.",
      "answer0": "16",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 15,
      "difficulty_id": 1,
      "explanation": "Pizzas made = given away + left = 5 + 11 = 16.",
      "hints": ["Add the pizzas given away to the pizzas left.", "11 + 5 = ?"],
      "source": "Ai Tong 2023 P1 Term 4 Mini Test 2 Q13",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_loc": null,
      "notes": "Key: 11 + 5 = 16."
    },
    {
      "n": 14,
      "type_id": 2,
      "question": "Jerry buys two items: a sharpener costing 25c and a ruler costing 70c. How much does he pay for the items? He pays [?] c for the items.",
      "answer0": "95",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 22,
      "difficulty_id": 1,
      "explanation": "70c + 25c = 95c.",
      "hints": ["Add the two prices together.", "70 + 25 = ?"],
      "source": "Ai Tong 2023 P1 Term 4 Mini Test 2 Q14",
      "image_needed": true,
      "image_options": false,
      "image_file": "q14.png",
      "image_page": 8,
      "image_loc": "middle of page, the sharpener (25c) and ruler (70c) pictures with their price labels",
      "notes": "Prices (25c, 70c) are printed under the pictures and stated in the stem, so the question is solvable from text; figure recorded for completeness. Key: 70c + 25c = 95c."
    },
    {
      "n": 15,
      "type_id": 2,
      "question": "Sam bought a notebook. He gave the cashier a one-dollar coin and got back 20c. How much did the notebook cost? The notebook cost [?] c.",
      "answer0": "80",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 22,
      "difficulty_id": 2,
      "explanation": "$1 = 100c. Cost = 100c - 20c (change) = 80c.",
      "hints": ["A one-dollar coin is 100c.", "Take away the 20c change: 100 - 20 = ?"],
      "source": "Ai Tong 2023 P1 Term 4 Mini Test 2 Q15",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_loc": null,
      "notes": "Answer key prints '$1 - 20c = 50c', but that is an error in the key: 100c - 20c = 80c. Corrected to 80c."
    }
  ]
}