{
"paper": {
"school": "Tao Nan",
"year": 2025,
"level": "P5",
"label": "Weighted Assessment 1",
"source_prefix": "Tao Nan 2025 P5 Weighted Assessment 1",
"has_answer_key": true
},
"questions": [
{
"n": 1,
"type_id": 2,
"question": "Write one hundred thousand and fifty-six in numerals. [?]",
"answer0": "100056",
"answer1": null,
"answer2": null,
"answer3": null,
"correct_answer": null,
"skill_id": 149,
"difficulty_id": 1,
"explanation": "One hundred thousand and fifty-six = 100 000 + 56 = 100056.",
"hints": ["One hundred thousand is 100 000.", "Add the fifty-six to the ones and tens places."],
"source": "Tao Nan 2025 P5 Weighted Assessment 1 Q1",
"image_needed": false,
"image_options": false,
"image_file": null,
"notes": ""
},
{
"n": 2,
"type_id": 2,
"question": "Find the value of $14 - 2 \\times 4 + 18 \\div 3$. [?]",
"answer0": "12",
"answer1": null,
"answer2": null,
"answer3": null,
"correct_answer": null,
"skill_id": 155,
"difficulty_id": 2,
"explanation": "Do multiplication and division first: 2 × 4 = 8 and 18 ÷ 3 = 6. Then 14 − 8 + 6 = 6 + 6 = 12.",
"hints": ["Apply order of operations: multiply and divide before adding and subtracting.", "Work left to right for the remaining addition and subtraction."],
"source": "Tao Nan 2025 P5 Weighted Assessment 1 Q2",
"image_needed": false,
"image_options": false,
"image_file": null,
"notes": ""
},
{
"n": 3,
"type_id": 2,
"question": "Round 10 345 to the nearest thousand. [?]",
"answer0": "10000",
"answer1": null,
"answer2": null,
"answer3": null,
"correct_answer": null,
"skill_id": 150,
"difficulty_id": 1,
"explanation": "The hundreds digit of 10 345 is 3, which is less than 5, so round down. 10 345 rounds to 10 000.",
"hints": ["Look at the hundreds digit to decide whether to round up or down.", "3 is less than 5, so round down."],
"source": "Tao Nan 2025 P5 Weighted Assessment 1 Q3",
"image_needed": false,
"image_options": false,
"image_file": null,
"notes": ""
},
{
"n": 4,
"type_id": 2,
"question": "Find the value of $2212 \\div 7$. [?]",
"answer0": "316",
"answer1": null,
"answer2": null,
"answer3": null,
"correct_answer": null,
"skill_id": 152,
"difficulty_id": 1,
"explanation": "2212 ÷ 7 = 316 (7 × 316 = 2212).",
"hints": ["Use long division.", "Check: 7 × 300 = 2100, then 7 × 16 = 112; 2100 + 112 = 2212."],
"source": "Tao Nan 2025 P5 Weighted Assessment 1 Q4",
"image_needed": false,
"image_options": false,
"image_file": null,
"notes": ""
},
{
"n": 5,
"type_id": 2,
"question": "Express \\(4\\dfrac{3}{8}\\) as a decimal. [?]",
"answer0": "4.375",
"answer1": null,
"answer2": null,
"answer3": null,
"correct_answer": null,
"skill_id": 158,
"difficulty_id": 2,
"explanation": "\\(\\dfrac{3}{8} = \\dfrac{375}{1000} = 0.375\\). So \\(4\\dfrac{3}{8} = 4.375\\).",
"hints": ["Convert the fraction part by dividing 3 by 8.", "3 ÷ 8 = 0.375, then add the whole number 4."],
"source": "Tao Nan 2025 P5 Weighted Assessment 1 Q5",
"image_needed": false,
"image_options": false,
"image_file": null,
"notes": ""
},
{
"n": 6,
"type_id": 2,
"question": "Mr Lim had 453 pencils. He sold \\(\\dfrac{1}{3}\\) of them. How many pencils did he sell? [?]",
"answer0": "151",
"answer1": null,
"answer2": null,
"answer3": null,
"correct_answer": null,
"skill_id": 161,
"difficulty_id": 1,
"explanation": "\\(\\dfrac{1}{3}\\) of 453 = 453 ÷ 3 = 151 pencils.",
"hints": ["Finding 1/3 of an amount means dividing by 3.", "453 ÷ 3 = 151."],
"source": "Tao Nan 2025 P5 Weighted Assessment 1 Q6",
"image_needed": false,
"image_options": false,
"image_file": null,
"notes": ""
},
{
"n": 7,
"type_id": 1,
"question": "A recipe uses \\(1\\dfrac{5}{6}\\) kg of flour to make one cake. How much flour is needed to make 7 such cakes? Express your answer as a mixed number.",
"answer0": "\\(12\\dfrac{5}{6}\\) kg",
"answer1": "\\(12\\dfrac{1}{6}\\) kg",
"answer2": "\\(11\\dfrac{5}{6}\\) kg",
"answer3": "\\(13\\dfrac{1}{6}\\) kg",
"correct_answer": 0,
"skill_id": 163,
"difficulty_id": 2,
"explanation": "\\(1\\dfrac{5}{6} \\times 7 = \\dfrac{11}{6} \\times 7 = \\dfrac{77}{6} = 12\\dfrac{5}{6}\\) kg.",
"hints": ["Convert the mixed number to an improper fraction first: 11/6.", "Multiply by 7 then convert back to a mixed number."],
"source": "Tao Nan 2025 P5 Weighted Assessment 1 Q7",
"image_needed": false,
"image_options": false,
"image_file": null,
"notes": "Answer is a mixed number, so rendered as MCQ per FIB-fraction rule."
},
{
"n": 8,
"type_id": 1,
"question": "Find the value of \\(\\dfrac{3}{8} + 2\\dfrac{1}{2}\\). Express your answer as a mixed number.",
"answer0": "\\(2\\dfrac{7}{8}\\)",
"answer1": "\\(2\\dfrac{4}{8}\\)",
"answer2": "\\(2\\dfrac{1}{2}\\)",
"answer3": "\\(3\\dfrac{1}{8}\\)",
"correct_answer": 0,
"skill_id": 160,
"difficulty_id": 2,
"explanation": "\\(2\\dfrac{1}{2} = 2\\dfrac{4}{8}\\). Then \\(\\dfrac{3}{8} + 2\\dfrac{4}{8} = 2\\dfrac{7}{8}\\).",
"hints": ["Make the denominators the same: change 1/2 to 4/8.", "Add the fraction parts: 3/8 + 4/8 = 7/8."],
"source": "Tao Nan 2025 P5 Weighted Assessment 1 Q8",
"image_needed": false,
"image_options": false,
"image_file": null,
"notes": "Answer is a mixed number, so rendered as MCQ per FIB-fraction rule."
},
{
"n": 9,
"type_id": 2,
"question": "Find the area of the triangle. [?]",
"answer0": "24",
"answer1": null,
"answer2": null,
"answer3": null,
"correct_answer": null,
"skill_id": 186,
"difficulty_id": 2,
"explanation": "Area of triangle = \\(\\dfrac{1}{2} \\times \\text{base} \\times \\text{height} = \\dfrac{1}{2} \\times 8 \\times 6 = 24\\) cm². (The 10 cm side is the slant and not used.)",
"hints": ["Use ½ × base × height; the base is 8 cm and the perpendicular height is 6 cm.", "Ignore the 10 cm slant side."],
"source": "Tao Nan 2025 P5 Weighted Assessment 1 Q9",
"image_needed": true,
"image_options": false,
"image_file": "q9.png",
"image_page": 5,
"image_bbox": [0.33, 0.16, 0.62, 0.32],
"image_loc": "right-angled triangle figure in the upper-middle of the page, base 8 cm, height 6 cm, slant 10 cm",
"notes": "Answer in cm²."
},
{
"n": 10,
"type_id": 2,
"question": "Arrange the decimals from the smallest to the largest:
0.75, 0.8, 0.605, 0.67
[?], [?], [?], [?]",
"answer0": "0.605",
"answer1": "0.67",
"answer2": "0.75",
"answer3": "0.8",
"correct_answer": null,
"skill_id": 124,
"difficulty_id": 2,
"explanation": "Compare place by place: 0.605 < 0.67 < 0.75 < 0.8. Smallest to largest: 0.605, 0.67, 0.75, 0.8.",
"hints": ["Line up the decimal points and compare the tenths digit first.", "0.605 and 0.67 are smaller than 0.75 and 0.8."],
"source": "Tao Nan 2025 P5 Weighted Assessment 1 Q10",
"image_needed": false,
"image_options": false,
"image_file": null,
"notes": "Ordering task: one blank per position, smallest to largest."
},
{
"n": 11,
"type_id": 2,
"question": "John spent $18.50 on some rulers and erasers. He bought 3 more rulers than erasers. A ruler costs $1.50 and an eraser costs $0.50. How many erasers did John buy? [?]",
"answer0": "7",
"answer1": null,
"answer2": null,
"answer3": null,
"correct_answer": null,
"skill_id": 152,
"difficulty_id": 3,
"explanation": "The 3 extra rulers cost $1.50 × 3 = $4.50. Remaining $18.50 − $4.50 = $14 buys equal numbers of rulers and erasers. One ruler + one eraser = $1.50 + $0.50 = $2. So $14 ÷ $2 = 7 erasers.",
"hints": ["First set aside the cost of the 3 extra rulers.", "Then pair one ruler with one eraser ($2 per pair) and divide the remaining money."],
"source": "Tao Nan 2025 P5 Weighted Assessment 1 Q11",
"image_needed": false,
"image_options": false,
"image_file": null,
"notes": ""
},
{
"n": 12,
"type_id": 2,
"question": "In a Quiz, Adam attempted 10 questions and scored a total of 60 points. For each correct answer, he scored 8 points. For each wrong answer, he had 2 points deducted from the overall total points. How many questions did Adam answer correctly? [?]",
"answer0": "8",
"answer1": null,
"answer2": null,
"answer3": null,
"correct_answer": null,
"skill_id": 152,
"difficulty_id": 3,
"explanation": "If all 10 were correct: 10 × 8 = 80 points. Actual is 60, a shortfall of 80 − 60 = 20. Each wrong answer changes the total by 8 + 2 = 10 (lose the 8 and deduct 2). 20 ÷ 10 = 2 wrong, so 10 − 2 = 8 correct.",
"hints": ["Assume all answers were correct, then see how far the total falls short.", "Each wrong answer costs 8 (not gained) plus 2 (deducted) = 10 points."],
"source": "Tao Nan 2025 P5 Weighted Assessment 1 Q12",
"image_needed": false,
"image_options": false,
"image_file": null,
"notes": ""
},
{
"n": 13,
"type_id": 2,
"question": "The figure shows the floor plan of a house.
(a) Find the perimeter of the Master Bedroom. [?]
(b) Find the area of the house, including the garden. [?]",
"answer0": "18",
"answer1": "78",
"answer2": null,
"answer3": null,
"correct_answer": null,
"skill_id": 138,
"difficulty_id": 3,
"explanation": "(a) Master bedroom width: 8 m − 3 m offset gives the room layout; its width is 8 m − 5 m = 2 m... using the marked dimensions the Master Bedroom is 7 m by 2 m, so perimeter = (7 + 2) × 2 = 18 m. (b) Area = Master bedroom 2 × 7 = 14, main block 5 × 8 = 40, side strip 3 × 6 = 18, triangular garden ½ × 2 × 6 = 6; total 14 + 40 + 18 + 6 = 78 m².",
"hints": ["For (a) the Master Bedroom is a rectangle; add its length and width then double.", "For (b) split the whole house into rectangles and the triangular garden, then add the areas."],
"source": "Tao Nan 2025 P5 Weighted Assessment 1 Q13",
"image_needed": true,
"image_options": false,
"image_file": "q13.png",
"image_page": 7,
"image_bbox": [0.27, 0.22, 0.78, 0.56],
"image_loc": "floor-plan diagram in the middle of the page showing Master bedroom, Guest room, Study room, Living room, Toilet and Garden with dimensions",
"notes": "(a) perimeter in m = 18; (b) area in m² = 78. Answer key working shows 14 + 40 + 18 + 6 = 78 m²."
},
{
"n": 14,
"type_id": 2,
"question": "In a shop, candles are only sold in boxes. A box of 7 short candles costs $2 and a box of 5 long candles costs $3.
(a) Xiao Ming needs 14 short candles and 15 long candles for his lanterns. How much will Xiao Ming need to spend on the candles? [?]
(b) What is the least amount of money that Susan needs to spend to buy 30 short candles and 24 long candles? [?]",
"answer0": "13",
"answer1": "25",
"answer2": null,
"answer3": null,
"correct_answer": null,
"skill_id": 152,
"difficulty_id": 3,
"explanation": "(a) 14 short = 2 boxes × $2 = $4; 15 long = 3 boxes × $3 = $9; total $4 + $9 = $13. (b) 30 short needs 30 ÷ 7 = 4 boxes (rounded up) × $2 = ... key shows 5 short-boxes path: short candles cost $2 × 5 = $10 for 35 candles covering 30; long: 24 ÷ 5 = 5 boxes × $3 = $15; least total $10 + $15 = $25.",
"hints": ["Candles come only in full boxes, so round the number of boxes up.", "Multiply each box count by its price, then add."],
"source": "Tao Nan 2025 P5 Weighted Assessment 1 Q14",
"image_needed": true,
"image_options": false,
"image_file": "q14.png",
"image_page": 8,
"image_bbox": [0.28, 0.18, 0.74, 0.33],
"image_loc": "two candle-box pictures near the top of the page: '$2 7 short candles' and '$3 5 long candles'",
"notes": "(a) $13; (b) $25 (least cost, boxes rounded up). Both answers in dollars."
},
{
"n": 15,
"type_id": 1,
"question": "James spent \\(\\dfrac{1}{5}\\) of his money on a pen and a notebook. The notebook cost twice as much as the pen. James spent \\(\\dfrac{5}{6}\\) of his remaining money on a bag. He spent $18 more on the bag than on the pen. What fraction of James' money was spent on the pen?",
"answer0": "\\(\\dfrac{1}{15}\\)",
"answer1": "\\(\\dfrac{2}{15}\\)",
"answer2": "\\(\\dfrac{1}{5}\\)",
"answer3": "\\(\\dfrac{1}{10}\\)",
"correct_answer": 0,
"skill_id": 165,
"difficulty_id": 3,
"explanation": "Pen + notebook = 1/5 of money, with notebook = 2 × pen, so pen = 1/3 of that 1/5 = 1/15 of total money. (b) Remaining money = 4/5; bag = 5/6 of 4/5 = 2/3 of total. Bag − pen = 2/3 − 1/15 = 10/15 − 1/15 = 9/15 = 3/5 of total = $18, so total = $30.",
"hints": ["The pen and notebook split 1/5 in the ratio 1 : 2, so the pen is one-third of 1/5.", "Set the bag-minus-pen fraction equal to $18 to find the whole."],
"source": "Tao Nan 2025 P5 Weighted Assessment 1 Q15",
"image_needed": false,
"image_options": false,
"image_file": null,
"notes": "Part (a) answer 1/15 is a fraction, so the question is rendered as MCQ for part (a) per FIB-fraction rule. Part (b) answer (James had $30 at first) is given in the explanation; it cannot share an FIB blank because part (a) is a fraction."
}
]
}