{
  "paper": {
    "school": "Nan Hua",
    "year": 2024,
    "level": "P3",
    "label": "Term 1 Review",
    "source_prefix": "Nan Hua 2024 P3 Term 1 Review",
    "has_answer_key": true
  },
  "questions": [
    {
      "n": 1,
      "type_id": 1,
      "question": "Which of the following is six thousand, four hundred and eight in numerals?",
      "answer0": "6048",
      "answer1": "6400",
      "answer2": "6408",
      "answer3": "6480",
      "correct_answer": 2,
      "skill_id": 67,
      "difficulty_id": 1,
      "explanation": "Six thousand = 6000, four hundred = 400, eight = 8. 6000 + 400 + 8 = 6408.",
      "hints": ["Write each part as a number: thousands, hundreds, ones.", "There are 0 tens, so put a 0 in the tens place: 6408."],
      "source": "Nan Hua 2024 P3 Term 1 Review Q1",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: option 3 (6408)."
    },
    {
      "n": 2,
      "type_id": 1,
      "question": "What is the value of digit 3 in 4379?",
      "answer0": "30",
      "answer1": "300",
      "answer2": "3",
      "answer3": "3000",
      "correct_answer": 1,
      "skill_id": 66,
      "difficulty_id": 1,
      "explanation": "In 4379 the digit 3 is in the hundreds place, so its value is 3 hundreds = 300.",
      "hints": ["Identify which place the digit 3 sits in.", "3 is in the hundreds column, so its value is 300."],
      "source": "Nan Hua 2024 P3 Term 1 Review Q2",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: option 2 (300)."
    },
    {
      "n": 3,
      "type_id": 1,
      "question": "What is the number shown?",
      "answer0": "2065",
      "answer1": "2506",
      "answer2": "2605",
      "answer3": "2650",
      "correct_answer": 2,
      "skill_id": 66,
      "difficulty_id": 2,
      "explanation": "2 thousands + 6 hundreds + 0 tens + 5 ones = 2000 + 600 + 5 = 2605.",
      "hints": ["Add up the place-value parts: thousands, hundreds, tens, ones.", "There are no tens, so the tens digit is 0: 2605."],
      "source": "Nan Hua 2024 P3 Term 1 Review Q3",
      "image_needed": true,
      "image_page": 2,
      "image_loc": "below the question near top of page; box containing labels '6 hundreds', '2 thousands', '5 ones' with an arrow pointing to a '?' box",
      "image_options": false,
      "image_file": "q3.png",
      "notes": "Key: option 3 (2605). Figure shows place-value tag cards."
    },
    {
      "n": 4,
      "type_id": 1,
      "question": "Which of the following numbers is the smallest?",
      "answer0": "8902",
      "answer1": "8931",
      "answer2": "8796",
      "answer3": "8769",
      "correct_answer": 3,
      "skill_id": 68,
      "difficulty_id": 1,
      "explanation": "All start with 8. Compare hundreds: 8769 and 8796 have 7 hundreds (smallest). Then compare tens: 6 < 9, so 8769 is smallest.",
      "hints": ["Compare digits from the largest place value first.", "8769 and 8796 both have 7 hundreds; 8769 has fewer tens."],
      "source": "Nan Hua 2024 P3 Term 1 Review Q4",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: option 4 (8769)."
    },
    {
      "n": 5,
      "type_id": 1,
      "question": "Arrange the following numbers from the smallest to the greatest.\n3210, 2501, 3127",
      "answer0": "2501 , 3210 , 3127",
      "answer1": "2501 , 3127 , 3210",
      "answer2": "3210 , 3127 , 2501",
      "answer3": "3127 , 3210 , 2501",
      "correct_answer": 1,
      "skill_id": 69,
      "difficulty_id": 2,
      "explanation": "2501 has 2 thousands (smallest). 3127 and 3210 both have 3 thousands; 3127 has 1 hundred vs 3210's 2 hundreds, so 3127 < 3210. Order: 2501, 3127, 3210.",
      "hints": ["The number with the fewest thousands is smallest.", "Between 3127 and 3210, compare the hundreds digit."],
      "source": "Nan Hua 2024 P3 Term 1 Review Q5",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: option 2 (2501, 3127, 3210). Numbers shown as three tag cards; rendered inline since the MCQ options are text."
    },
    {
      "n": 6,
      "type_id": 1,
      "question": "In the number pattern, what is the missing number?\n5088, 5091, 5094, 5097, _________, 5103",
      "answer0": "5010",
      "answer1": "5098",
      "answer2": "5100",
      "answer3": "5102",
      "correct_answer": 2,
      "skill_id": 69,
      "difficulty_id": 2,
      "explanation": "The numbers increase by 3 each time (5088, 5091, 5094, 5097...). 5097 + 3 = 5100, and 5100 + 3 = 5103.",
      "hints": ["Find the difference between consecutive numbers.", "Each term goes up by 3: 5097 + 3 = 5100."],
      "source": "Nan Hua 2024 P3 Term 1 Review Q6",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: option 3 (5100)."
    },
    {
      "n": 7,
      "type_id": 1,
      "question": "Find the value of 3826 + 2641.",
      "answer0": "1185",
      "answer1": "1285",
      "answer2": "5467",
      "answer3": "6467",
      "correct_answer": 3,
      "skill_id": 70,
      "difficulty_id": 1,
      "explanation": "3826 + 2641 = 6467.",
      "hints": ["Add starting from the ones column, carrying when needed.", "3826 + 2641 = 6467."],
      "source": "Nan Hua 2024 P3 Term 1 Review Q7",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: option 4 (6467)."
    },
    {
      "n": 8,
      "type_id": 1,
      "question": "The sum of two numbers is 4567. One of the numbers is 2468. What is the other number?",
      "answer0": "2099",
      "answer1": "2119",
      "answer2": "6925",
      "answer3": "7035",
      "correct_answer": 0,
      "skill_id": 71,
      "difficulty_id": 2,
      "explanation": "The other number = sum - known number = 4567 - 2468 = 2099.",
      "hints": ["To find a missing addend, subtract the known number from the sum.", "4567 - 2468 = 2099."],
      "source": "Nan Hua 2024 P3 Term 1 Review Q8",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: option 1 (2099)."
    },
    {
      "n": 9,
      "type_id": 2,
      "question": "(a) Use the digits 2, 5, 7 to form the greatest 3-digit odd number. [?]\n(b) Use the digits 0, 2, 5 to form the smallest 3-digit even number. [?]",
      "answer0": "725",
      "answer1": "250",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 66,
      "difficulty_id": 2,
      "explanation": "(a) For the greatest odd number the ones digit must be odd; among 2,5,7 use largest digits first: 7 and 2 in front, odd 5 last -> 725. (b) For the smallest even number the ones digit must be even; cannot start with 0, so 2 hundreds, 0 tens, even ones 5? 5 is odd, so use 0 ones -> 250.",
      "hints": ["An odd number ends in an odd digit; an even number ends in an even digit.", "(a) Put the bigger digits in the higher places, odd digit last: 725. (b) Don't start with 0; end with an even digit: 250."],
      "source": "Nan Hua 2024 P3 Term 1 Review Q9",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: (a) 725, (b) 250. Digit cards (2,5,7) and (0,2,5) shown but values are stated in the stem, so no figure needed."
    },
    {
      "n": 10,
      "type_id": 2,
      "question": "1503 people were at a book fair. 942 were children and the rest were adults. How many adults were at the book fair? [?]",
      "answer0": "561",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 71,
      "difficulty_id": 2,
      "explanation": "Adults = total - children = 1503 - 942 = 561.",
      "hints": ["Subtract the number of children from the total.", "1503 - 942 = 561."],
      "source": "Nan Hua 2024 P3 Term 1 Review Q10",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 561."
    },
    {
      "n": 11,
      "type_id": 2,
      "question": "There are 820 red markers and 1048 blue markers in a shop. How many markers are there altogether? [?]",
      "answer0": "1868",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 71,
      "difficulty_id": 1,
      "explanation": "Total = 820 + 1048 = 1868.",
      "hints": ["'Altogether' means add the two amounts.", "820 + 1048 = 1868."],
      "source": "Nan Hua 2024 P3 Term 1 Review Q11",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: 1868."
    },
    {
      "n": 12,
      "type_id": 2,
      "question": "Jack had 2000 marbles. He had 653 more marbles than Tom.\n(a) How many marbles did Tom have? [?]\n(b) Tom bought another 480 marbles. How many marbles did Tom have in total? [?]",
      "answer0": "1347",
      "answer1": "1827",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 71,
      "difficulty_id": 2,
      "explanation": "(a) Jack has 653 more than Tom, so Tom = 2000 - 653 = 1347. (b) After buying 480 more: 1347 + 480 = 1827.",
      "hints": ["(a) Tom has 653 fewer than Jack, so subtract.", "(a) 2000 - 653 = 1347. (b) 1347 + 480 = 1827."],
      "source": "Nan Hua 2024 P3 Term 1 Review Q12",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: (a) 1347, (b) 1827. Answer key shows a model-drawing diagram for working only."
    },
    {
      "n": 13,
      "type_id": 2,
      "question": "Mary saved $799 in February. She saved $253 less in February than in January. How much did Mary save altogether in January and in February? [?]",
      "answer0": "1851",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 71,
      "difficulty_id": 3,
      "explanation": "February is $253 less than January, so January = 799 + 253 = 1052. Altogether = 1052 + 799 = 1851.",
      "hints": ["February is the smaller amount, so January = February + 253.", "January = 799 + 253 = 1052; total = 1052 + 799 = 1851."],
      "source": "Nan Hua 2024 P3 Term 1 Review Q13",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Key: $1851 (answer is in dollars). Answer key shows a model-drawing diagram for working only."
    }
  ]
}