{
  "paper": {
    "school": "Anglo-Chinese School (Junior)",
    "year": 2022,
    "level": "P2",
    "label": "Bite-Sized Assessment 3",
    "source_prefix": "ACS 2022 P2 Bite-Sized Assessment 3",
    "has_answer_key": true
  },
  "questions": [
    {
      "n": 1,
      "type_id": 1,
      "question": "The mass of the jar of sweets is _______ g.",
      "answer0": "607",
      "answer1": "650",
      "answer2": "670",
      "answer3": "770",
      "correct_answer": 2,
      "skill_id": 50,
      "difficulty_id": 1,
      "explanation": "The needle on the scale points to 670, so the jar of sweets has a mass of 670 g.",
      "hints": ["Read where the pointer on the scale stops.", "Each big mark is 100 g; read between 600 and 700."],
      "source": "ACS 2022 P2 Bite-Sized Assessment 3 Q1",
      "image_needed": true,
      "image_options": false,
      "image_page": 2,
      "image_file": null,
      "image_loc": "centre of page: jar of sweets on a kitchen scale",
      "notes": "Answer key: Q1 = (3) 670 g (index 2)."
    },
    {
      "n": 2,
      "type_id": 1,
      "question": "What is the length of the eraser?",
      "answer0": "7 cm",
      "answer1": "2 cm",
      "answer2": "5 cm",
      "answer3": "6 cm",
      "correct_answer": 2,
      "skill_id": 50,
      "difficulty_id": 1,
      "explanation": "The eraser runs from the 2 cm mark to the 7 cm mark on the ruler, so its length is 7 - 2 = 5 cm.",
      "hints": ["Find where the eraser starts and ends on the ruler.", "Subtract the start mark from the end mark."],
      "source": "ACS 2022 P2 Bite-Sized Assessment 3 Q2",
      "image_needed": true,
      "image_options": false,
      "image_page": 3,
      "image_file": null,
      "image_loc": "top of page: an eraser lying along a centimetre ruler",
      "notes": "Answer key: Q2 = (3) 5 cm (index 2). Eraser spans 2 cm to 7 cm."
    },
    {
      "n": 3,
      "type_id": 1,
      "question": "Wei Ling had some money. After buying a wallet, he had $13 left. The wallet costs $38. How much did Wei Ling have at first?",
      "answer0": "$13",
      "answer1": "$25",
      "answer2": "$38",
      "answer3": "$51",
      "correct_answer": 3,
      "skill_id": 49,
      "difficulty_id": 2,
      "explanation": "Money at first = money spent + money left = $38 + $13 = $51.",
      "hints": ["Add the cost of the wallet to the money left over.", "$38 + $13 = ?"],
      "source": "ACS 2022 P2 Bite-Sized Assessment 3 Q3",
      "image_needed": false,
      "image_options": false,
      "image_page": null,
      "image_file": null,
      "image_loc": null,
      "notes": "Answer key: Q3 = (4) $51 (index 3)."
    },
    {
      "n": 4,
      "type_id": 1,
      "question": "The box of cereal weighs 300g. What is the mass of the bag of sweets?",
      "answer0": "100 g",
      "answer1": "200 g",
      "answer2": "300 g",
      "answer3": "400 g",
      "correct_answer": 0,
      "skill_id": 50,
      "difficulty_id": 2,
      "explanation": "The scale reads 400 g for both items together. Mass of sweets = 400 - 300 = 100 g.",
      "hints": ["Read the total mass shown on the scale.", "Subtract the mass of the cereal box from the total."],
      "source": "ACS 2022 P2 Bite-Sized Assessment 3 Q4",
      "image_needed": true,
      "image_options": false,
      "image_page": 4,
      "image_file": null,
      "image_loc": "top of page: a bag of sweets and a cereal box together on a scale reading 400 g",
      "notes": "Answer key: Q4 = (1) 100 g (index 0). Scale total is 400 g; cereal is 300 g."
    },
    {
      "n": 5,
      "type_id": 1,
      "question": "Fill in the blanks with cm or m. (a) The length of your pencil case is about 20 [?]. (b) The height of a flag pole is about 6 [?].",
      "answer0": "(a) cm  (b) m",
      "answer1": "(a) m  (b) cm",
      "answer2": "(a) cm  (b) cm",
      "answer3": "(a) m  (b) m",
      "correct_answer": 0,
      "skill_id": 52,
      "difficulty_id": 1,
      "explanation": "A pencil case is about 20 cm long; a flag pole is about 6 m tall. So (a) is cm and (b) is m.",
      "hints": ["Use cm for small everyday objects.", "Use m for tall or long things like a flag pole."],
      "source": "ACS 2022 P2 Bite-Sized Assessment 3 Q5",
      "image_needed": false,
      "image_options": false,
      "image_page": null,
      "image_file": null,
      "image_loc": null,
      "notes": "Answer key: Q5 (a) cm, (b) m. Unit words cm/m made into a 4-option MCQ (word answers cannot be FIB)."
    },
    {
      "n": 6,
      "type_id": 1,
      "question": "The [?] and [?] are of the same length.",
      "answer0": "paper clip and sharpener",
      "answer1": "pencil and pen",
      "answer2": "pencil and sharpener",
      "answer3": "pen and paper clip",
      "correct_answer": 0,
      "skill_id": 53,
      "difficulty_id": 2,
      "explanation": "Reading the ruler, the paper clip and the sharpener each measure about 3 cm, so they are of the same length.",
      "hints": ["Measure each object against the ruler below it.", "Find the two objects with equal length."],
      "source": "ACS 2022 P2 Bite-Sized Assessment 3 Q6",
      "image_needed": true,
      "image_options": false,
      "image_page": 5,
      "image_file": null,
      "image_loc": "centre of page: pencil, paper clip, sharpener and pen aligned above a 20 cm ruler",
      "notes": "Answer key: Q6(a) = the paper clip and sharpener are of the same length. Word answer made into MCQ. Part (b) is a separate FIB question (Q6b)."
    },
    {
      "n": "6b",
      "type_id": 2,
      "question": "The sharpener is shorter than the pen by [?] cm.",
      "answer0": "13",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 53,
      "difficulty_id": 2,
      "explanation": "Pen length = 18 cm, sharpener length = 5 cm. 18 - 5 = 13 cm.",
      "hints": ["Find the length of the pen and the length of the sharpener.", "Subtract: 18 - 5."],
      "source": "ACS 2022 P2 Bite-Sized Assessment 3 Q6",
      "image_needed": true,
      "image_options": false,
      "image_page": 5,
      "image_file": null,
      "image_loc": "centre of page: pencil, paper clip, sharpener and pen aligned above a 20 cm ruler",
      "notes": "Answer key: Q6(b) 18-5=13, Ans 13. Same figure as Q6."
    },
    {
      "n": 7,
      "type_id": 2,
      "question": "The total amount of money shown is $[?].",
      "answer0": "160.85",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 45,
      "difficulty_id": 3,
      "explanation": "Notes: $100 + $50 + $10 + $2 + $2 = $164 in notes (per key the total is $160.85). Coins 50c + 20c + 10c + 5c = 85c. Total per answer key = $160.85.",
      "hints": ["Add up all the notes first.", "Then add the coins as cents and combine."],
      "source": "ACS 2022 P2 Bite-Sized Assessment 3 Q7",
      "image_needed": true,
      "image_options": false,
      "image_page": 6,
      "image_file": null,
      "image_loc": "top of page: framed set of Singapore notes ($100, $50, $10, $2, $2) and coins (50c, 20c, 10c, 5c)",
      "notes": "Answer key: Q7(a) 160.85. Used key value verbatim. Part (b) is a separate question (Q7b)."
    },
    {
      "n": "7b",
      "type_id": 2,
      "question": "I can buy [?] apples with $6.",
      "answer0": "15",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 49,
      "difficulty_id": 2,
      "explanation": "Apples cost 5 for $2. $6 contains three lots of $2, so 5 x 3 = 15 apples.",
      "hints": ["How many $2 are there in $6?", "Multiply the number of $2 lots by 5 apples each."],
      "source": "ACS 2022 P2 Bite-Sized Assessment 3 Q7",
      "image_needed": true,
      "image_options": false,
      "image_page": 6,
      "image_file": null,
      "image_loc": "bottom right of page: '5 for $2' apple advertisement sign",
      "notes": "Answer key: Q7(b) 5x3=15. Advertisement figure ('5 for $2') needed."
    },
    {
      "n": 8,
      "type_id": 1,
      "question": "Ahmad had $50. He wanted to buy two toys. Which two toys could Ahmad buy with his $50?",
      "answer0": "Toy car and Toy train",
      "answer1": "Toy aeroplane and Toy train",
      "answer2": "Toy aeroplane and Toy car",
      "answer3": "Toy aeroplane and Toy aeroplane",
      "correct_answer": 0,
      "skill_id": 49,
      "difficulty_id": 2,
      "explanation": "Toy car $14 + Toy train $29 = $43, which is within $50. The other pairs cost more than $50.",
      "hints": ["Add the prices of each possible pair of toys.", "Find the pair that costs $50 or less."],
      "source": "ACS 2022 P2 Bite-Sized Assessment 3 Q8",
      "image_needed": true,
      "image_options": false,
      "image_page": 7,
      "image_file": null,
      "image_loc": "top of page: three boxes showing Toy aeroplane $37, Toy car $14, Toy train $29",
      "notes": "Answer key: Q8(a) 14+29=43, Ans Toy car and Toy train. Word answer made into MCQ. Part (b) is a separate FIB (Q8b)."
    },
    {
      "n": "8b",
      "type_id": 2,
      "question": "Gopal bought a toy aeroplane. He gave the cashier $50. How much change would Gopal receive? Gopal would receive $[?] change.",
      "answer0": "13",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 49,
      "difficulty_id": 2,
      "explanation": "Change = $50 - $37 = $13.",
      "hints": ["The toy aeroplane costs $37.", "Subtract the cost from $50."],
      "source": "ACS 2022 P2 Bite-Sized Assessment 3 Q8",
      "image_needed": true,
      "image_options": false,
      "image_page": 7,
      "image_file": null,
      "image_loc": "top of page: three boxes showing Toy aeroplane $37, Toy car $14, Toy train $29",
      "notes": "Answer key: Q8(b) 50-37=13. Toy aeroplane price ($37) is in the figure."
    },
    {
      "n": 9,
      "type_id": 2,
      "question": "The mass of the cake is the same as the mass of [?] bags of sugar.",
      "answer0": "3",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 53,
      "difficulty_id": 2,
      "explanation": "The balance shows the cake weighs the same as 3 bags of sugar.",
      "hints": ["Look at the second balance picture.", "Count the bags of sugar that balance the cake."],
      "source": "ACS 2022 P2 Bite-Sized Assessment 3 Q9",
      "image_needed": true,
      "image_options": false,
      "image_page": 8,
      "image_file": null,
      "image_loc": "centre of page: two balance scales - top (1 sugar bag vs 1 kg), bottom (3 sugar bags vs a cake)",
      "notes": "Answer key: Q9(a) 3. Part (b) is a separate FIB (Q9b)."
    },
    {
      "n": "9b",
      "type_id": 2,
      "question": "If each cake has the same mass, the total mass of 5 cakes is [?] kg.",
      "answer0": "15",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 54,
      "difficulty_id": 2,
      "explanation": "Each cake = 3 kg (3 bags of 1 kg sugar). 5 cakes = 3 x 5 = 15 kg.",
      "hints": ["One bag of sugar balances 1 kg, so the cake is 3 kg.", "Multiply 3 kg by 5 cakes."],
      "source": "ACS 2022 P2 Bite-Sized Assessment 3 Q9",
      "image_needed": true,
      "image_options": false,
      "image_page": 8,
      "image_file": null,
      "image_loc": "centre of page: two balance scales - top (1 sugar bag vs 1 kg), bottom (3 sugar bags vs a cake)",
      "notes": "Answer key: Q9(b) 3x5=15."
    },
    {
      "n": 10,
      "type_id": 2,
      "question": "A rice seller sold 100 kg of rice on the first day. He sold 21 kg more rice on the first day than on the second day. (a) How much rice did he sell on the second day? He sold [?] of rice on the second day. (b) How much rice did he sell altogether in the two days? He sold [?] of rice altogether in the two days.",
      "answer0": "79 kg",
      "answer1": "179 kg",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 35,
      "difficulty_id": 3,
      "explanation": "(a) Second day = 100 - 21 = 79 kg. (b) Altogether = 100 + 79 = 179 kg.",
      "hints": ["For (a) subtract 21 from 100.", "For (b) add both days together."],
      "source": "ACS 2022 P2 Bite-Sized Assessment 3 Q10",
      "image_needed": false,
      "image_options": false,
      "image_page": null,
      "image_file": null,
      "image_loc": null,
      "notes": "Answer key: Q10(a) 100-21=79kg, (b) 100+79=179kg. Two blanks (a) then (b)."
    },
    {
      "n": 11,
      "type_id": 2,
      "question": "A microwave oven costs $368. A kettle costs $270 less than the microwave oven. A fan costs $159. How much more does the fan cost than the kettle? The fan costs $[?] more than the kettle.",
      "answer0": "61",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 35,
      "difficulty_id": 3,
      "explanation": "Kettle = $368 - $270 = $98. Fan costs $159 - $98 = $61 more than the kettle.",
      "hints": ["First find the kettle's price: $368 - $270.", "Then subtract the kettle's price from the fan's $159."],
      "source": "ACS 2022 P2 Bite-Sized Assessment 3 Q11",
      "image_needed": false,
      "image_options": false,
      "image_page": null,
      "image_file": null,
      "image_loc": null,
      "notes": "Answer key: Q11 368-270=98, 159-98=$61."
    }
  ]
}