{
  "paper": {
    "school": "Ai Tong",
    "year": 2024,
    "level": "P5",
    "label": "Term 1 Review",
    "source_prefix": "Ai Tong 2024 P5 Term 1 Review",
    "has_answer_key": true
  },
  "questions": [
    {
      "n": 1,
      "type_id": 2,
      "question": "Write five million, twenty thousand and six hundred in numerals. [?]",
      "answer0": "5020600",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 149,
      "difficulty_id": 1,
      "explanation": "Five million = 5 000 000, twenty thousand = 20 000, six hundred = 600. Adding: 5 000 000 + 20 000 + 600 = 5 020 600.",
      "hints": ["Write each place value separately, then add.", "Five million has six zeros after the 5."],
      "source": "Ai Tong 2024 P5 Term 1 Review Q1",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 5020600."
    },
    {
      "n": 2,
      "type_id": 2,
      "question": "There are 219 962 people at a concert. Round this number to the nearest hundred. [?]",
      "answer0": "220000",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 150,
      "difficulty_id": 1,
      "explanation": "The tens digit of 219 962 is 6, so round the hundreds up: 219 962 rounds to 220 000.",
      "hints": ["Look at the tens digit to decide rounding.", "Nearest hundred keeps the hundreds place."],
      "source": "Ai Tong 2024 P5 Term 1 Review Q2",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 220000."
    },
    {
      "n": 3,
      "type_id": 2,
      "question": "In 4 321 698, the value of the digit 3 is [?].",
      "answer0": "300000",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 149,
      "difficulty_id": 1,
      "explanation": "In 4 321 698 the digit 3 is in the hundred thousands place, so its value is 300 000.",
      "hints": ["Locate the place of the digit 3.", "Hundred thousands place means × 100 000."],
      "source": "Ai Tong 2024 P5 Term 1 Review Q3",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 300000."
    },
    {
      "n": 4,
      "type_id": 2,
      "question": "What is the value of \\(8 + (5 \\times 3 + 41) \\div 4\\)? [?]",
      "answer0": "22",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 155,
      "difficulty_id": 2,
      "explanation": "Brackets first: \\(5 \\times 3 + 41 = 15 + 41 = 56\\). Then \\(56 \\div 4 = 14\\). Finally \\(8 + 14 = 22\\).",
      "hints": ["Work inside the brackets first (multiply before add).", "Then divide, then add the 8."],
      "source": "Ai Tong 2024 P5 Term 1 Review Q4",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 8 + (5×3+41) ÷ 4 = 22."
    },
    {
      "n": 5,
      "type_id": 2,
      "question": "Express \\(\\dfrac{7}{8}\\) as a decimal. [?]",
      "answer0": "0.875",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 158,
      "difficulty_id": 1,
      "explanation": "\\(\\dfrac{7}{8} = 7 \\div 8 = 0.875\\).",
      "hints": ["Divide the numerator by the denominator.", "7 ÷ 8 gives a terminating decimal."],
      "source": "Ai Tong 2024 P5 Term 1 Review Q5",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 0.875 (decimal answer → FIB)."
    },
    {
      "n": 6,
      "type_id": 1,
      "question": "The mass of a can of soda is \\(\\dfrac{4}{5}\\) kg. What is the total mass of 6 such cans? Express your answer as a mixed number in its simplest form.",
      "answer0": "\\(4\\dfrac{4}{5}\\) kg",
      "answer1": "\\(4\\dfrac{1}{5}\\) kg",
      "answer2": "\\(\\dfrac{24}{5}\\) kg",
      "answer3": "\\(5\\dfrac{4}{5}\\) kg",
      "correct_answer": 0,
      "skill_id": 163,
      "difficulty_id": 2,
      "explanation": "\\(\\dfrac{4}{5} \\times 6 = \\dfrac{24}{5} = 4\\dfrac{4}{5}\\) kg.",
      "hints": ["Multiply the fraction by 6.", "Convert the improper fraction to a mixed number."],
      "source": "Ai Tong 2024 P5 Term 1 Review Q6",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Mixed-number answer → MCQ. Key: 4/5 × 6/1 = 24/5 = 4 4/5 kg."
    },
    {
      "n": 7,
      "type_id": 1,
      "question": "Miss Arifah bought \\(\\dfrac{5}{8}\\) m of ribbon. She used \\(\\dfrac{2}{7}\\) of it to tie a present. What is the length of ribbon she used to tie the present? Express your answer as a fraction in its simplest form.",
      "answer0": "\\(\\dfrac{5}{28}\\) m",
      "answer1": "\\(\\dfrac{10}{56}\\) m",
      "answer2": "\\(\\dfrac{7}{15}\\) m",
      "answer3": "\\(\\dfrac{5}{14}\\) m",
      "correct_answer": 0,
      "skill_id": 161,
      "difficulty_id": 2,
      "explanation": "\\(\\dfrac{5}{8} \\times \\dfrac{2}{7} = \\dfrac{10}{56} = \\dfrac{5}{28}\\) m.",
      "hints": ["'Of' means multiply the two fractions.", "Simplify the product to its lowest terms."],
      "source": "Ai Tong 2024 P5 Term 1 Review Q7",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Fraction answer → MCQ. Key: 5/8 × 2/7 = 10/56 = 5/28 m."
    },
    {
      "n": 8,
      "type_id": 2,
      "question": "Erasers were sold in packets of 6 for $4 or 1 eraser for $0.80. James bought 50 erasers. What was the least amount of money he spent on the erasers?<br>Ans: $[?]",
      "answer0": "33.60",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 167,
      "difficulty_id": 2,
      "explanation": "Cheapest is to buy as many packets of 6 as possible: 8 packets = 48 erasers for \\(8 \\times \\$4 = \\$32\\). The remaining 2 erasers cost \\(2 \\times \\$0.80 = \\$1.60\\). Total = \\$32 + \\$1.60 = \\$33.60.",
      "hints": ["Packets of 6 are cheaper per eraser than buying singles.", "Buy as many packets as possible, then top up with singles."],
      "source": "Ai Tong 2024 P5 Term 1 Review Q8",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Pricing label/eraser picture is decorative; prices are in the stem so no figure needed. Key: 8 packets (48) for $32 + 2 singles $1.60 = $33.60."
    },
    {
      "n": 9,
      "type_id": 2,
      "question": "A number when multiplied by 30 has a product of 12 600. What is the quotient when this same number is divided by 6? [?]",
      "answer0": "70",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 151,
      "difficulty_id": 2,
      "explanation": "The number = \\(12\\,600 \\div 30 = 420\\). Then \\(420 \\div 6 = 70\\).",
      "hints": ["Find the original number first by dividing by 30.", "Then divide that number by 6."],
      "source": "Ai Tong 2024 P5 Term 1 Review Q9",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 420 ÷ 6 = 70."
    },
    {
      "n": 10,
      "type_id": 2,
      "question": "There are twice as many $1 coins as $2 notes in a bag. The total amount in the bag is $276. How many $2 notes are there? [?]",
      "answer0": "69",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 152,
      "difficulty_id": 2,
      "explanation": "Let the number of $2 notes be 1 unit; then $1 coins = 2 units. Value = \\(2 \\times \\$1 + 1 \\times \\$2 = \\$4\\) per unit of $2 notes. \\$276 ÷ \\$4 = 69, so there are 69 $2 notes.",
      "hints": ["Each $2 note pairs with two $1 coins.", "One such group is worth $2 + $1 + $1 = $4."],
      "source": "Ai Tong 2024 P5 Term 1 Review Q10",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 69."
    },
    {
      "n": 11,
      "type_id": 2,
      "question": "Hannah bought some nuts. She used \\(\\dfrac{1}{3}\\) of the nuts to bake some cookies and \\(\\dfrac{1}{4}\\) of the nuts to bake bread. She was left with 600 g of nuts. What was the mass of nuts she bought?<br>Ans: [?] g",
      "answer0": "1440",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 165,
      "difficulty_id": 3,
      "explanation": "Fraction used = \\(\\dfrac{1}{3} + \\dfrac{1}{4} = \\dfrac{4}{12} + \\dfrac{3}{12} = \\dfrac{7}{12}\\). Fraction left = \\(\\dfrac{5}{12}\\). So 5 units = 600 g → 1 unit = 120 g → total 12 units = 1440 g.",
      "hints": ["Add the two fractions used over a common denominator.", "The leftover fraction equals 600 g."],
      "source": "Ai Tong 2024 P5 Term 1 Review Q11",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 5u = 600, 1u = 120, 12u = 1440 g."
    },
    {
      "n": 12,
      "type_id": 2,
      "question": "A book costs three times as much as a file. Cherie paid a total of $63 for 1 book and 4 files. What is the total price of a book and a file?<br>Ans: $[?]",
      "answer0": "36",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 152,
      "difficulty_id": 2,
      "explanation": "Book = 3 units, file = 1 unit. 1 book + 4 files = 3 + 4 = 7 units = $63, so 1 unit = $9. A book and a file = 3 + 1 = 4 units = 4 × $9 = $36.",
      "hints": ["Let a file be 1 unit and a book be 3 units.", "Find the value of one unit from the total."],
      "source": "Ai Tong 2024 P5 Term 1 Review Q12",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 7u = 63, 1u = 9, book + file = 3u + 1u = 4u = $36."
    },
    {
      "n": 13,
      "type_id": 1,
      "question": "Ali spent \\(\\dfrac{2}{3}\\) of his money on pens, \\(\\dfrac{3}{5}\\) of the remainder on toys and saved the rest. What fraction of his money did Ali spend on toys? Leave your answer in the simplest form.",
      "answer0": "\\(\\dfrac{1}{5}\\)",
      "answer1": "\\(\\dfrac{3}{15}\\)",
      "answer2": "\\(\\dfrac{2}{5}\\)",
      "answer3": "\\(\\dfrac{3}{5}\\)",
      "correct_answer": 0,
      "skill_id": 165,
      "difficulty_id": 2,
      "explanation": "Remainder after pens = \\(1 - \\dfrac{2}{3} = \\dfrac{1}{3}\\). Toys = \\(\\dfrac{3}{5} \\times \\dfrac{1}{3} = \\dfrac{3}{15} = \\dfrac{1}{5}\\) of his money.",
      "hints": ["Find the remaining fraction after the pens.", "Multiply that remainder by 3/5 for the toys."],
      "source": "Ai Tong 2024 P5 Term 1 Review Q13",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Q13 part (a): fraction answer → MCQ. Key: 3/5 × 1/3 = 3/15 = 1/5. Part (b) is a separate FIB item (n=14)."
    },
    {
      "n": 14,
      "type_id": 2,
      "question": "Ali spent \\(\\dfrac{2}{3}\\) of his money on pens, \\(\\dfrac{3}{5}\\) of the remainder on toys and saved the rest. Ali spent $160 more on pens than the amount he saved. How much money did he save?<br>Ans: $[?]",
      "answer0": "40",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 165,
      "difficulty_id": 3,
      "explanation": "Take total money as 15 units. Pens = \\(\\dfrac{2}{3}\\) = 10 units. Remainder = 5 units; toys = \\(\\dfrac{3}{5}\\) of 5 = 3 units; saved = 2 units. Pens − saved = 10 − 2 = 8 units = $160, so 1 unit = $20, and saved = 2 units = $40.",
      "hints": ["Use 15 units for the whole so the fractions are whole units.", "Pens are 10 units and savings 2 units; their difference is $160."],
      "source": "Ai Tong 2024 P5 Term 1 Review Q13b",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Paper Q13 part (b); split into its own item because part (a) (fraction) became an MCQ (item n=13). Key: 8u = 160, 1u = 20, saved 2u = $40."
    }
  ]
}