{
  "paper": {
    "school": "Tao Nan",
    "year": 2022,
    "level": "P5",
    "label": "Weighted Assessment 1",
    "source_prefix": "Tao Nan 2022 P5 Weighted Assessment 1",
    "has_answer_key": true
  },
  "questions": [
    {
      "n": 1,
      "type_id": 1,
      "question": "Write 8 093 547 in words.",
      "answer0": "Eight million, ninety-three thousand, five hundred and forty-seven",
      "answer1": "Eight million, nine hundred and three thousand, five hundred and forty-seven",
      "answer2": "Eighty million, ninety-three thousand, five hundred and forty-seven",
      "answer3": "Eight million, ninety-three thousand and forty-seven",
      "correct_answer": 0,
      "skill_id": 149,
      "difficulty_id": 1,
      "explanation": "8 093 547 = 8 000 000 + 93 000 + 547, read as eight million, ninety-three thousand, five hundred and forty-seven.",
      "hints": ["Split the number into millions, thousands and ones.", "0 in the hundred-thousands place: 093 thousand = ninety-three thousand."],
      "source": "Tao Nan 2022 P5 Weighted Assessment 1 Q1",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Write-in-words task converted to MCQ per spec (word answers must be MCQ)."
    },
    {
      "n": 2,
      "type_id": 2,
      "question": "In the number 7 428 359, what is the value of the digit 2? [?]",
      "answer0": "20000",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 149,
      "difficulty_id": 1,
      "explanation": "In 7 428 359 the digit 2 is in the ten-thousands place, so its value is 2 × 10 000 = 20 000.",
      "hints": ["Identify which place the digit 2 sits in.", "Value = digit × place value."],
      "source": "Tao Nan 2022 P5 Weighted Assessment 1 Q2",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Printed key: 20000."
    },
    {
      "n": 3,
      "type_id": 2,
      "question": "$90 - (6 + 18 \\div 3) \\times 4 =$ [?]",
      "answer0": "42",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 155,
      "difficulty_id": 2,
      "explanation": "$90-(6+18\\div3)\\times4 = 90-(6+6)\\times4 = 90-12\\times4 = 90-48 = 42$.",
      "hints": ["Work inside the brackets first; do division before addition.", "Then multiply, then subtract."],
      "source": "Tao Nan 2022 P5 Weighted Assessment 1 Q3",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Printed key: 42."
    },
    {
      "n": 4,
      "type_id": 2,
      "question": "Find the sum of all the factors of 16. [?]",
      "answer0": "31",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 111,
      "difficulty_id": 2,
      "explanation": "Factors of 16 are 1, 2, 4, 8 and 16. Sum = 1 + 2 + 4 + 8 + 16 = 31.",
      "hints": ["List every number that divides 16 exactly.", "Add them all up."],
      "source": "Tao Nan 2022 P5 Weighted Assessment 1 Q4",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Printed key: 31."
    },
    {
      "n": 5,
      "type_id": 2,
      "question": "A bookshop had 400 pens. After \\(\\dfrac{3}{8}\\) of the pens were sold, how many pens were left? [?]",
      "answer0": "250",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 161,
      "difficulty_id": 2,
      "explanation": "Fraction left = $1-\\dfrac{3}{8}=\\dfrac{5}{8}$. 8 units = 400, 1 unit = 400 ÷ 8 = 50, 5 units = 50 × 5 = 250.",
      "hints": ["Find the fraction that is left, not sold.", "8 units = 400 pens, so 1 unit = 50."],
      "source": "Tao Nan 2022 P5 Weighted Assessment 1 Q5",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Printed key: 250."
    },
    {
      "n": 6,
      "type_id": 1,
      "question": "Find the value of \\(\\dfrac{7}{9} \\times \\dfrac{12}{5}\\). Express your answer as a mixed number in the simplest form.",
      "answer0": "\\(1\\dfrac{13}{15}\\)",
      "answer1": "\\(1\\dfrac{11}{15}\\)",
      "answer2": "\\(2\\dfrac{13}{15}\\)",
      "answer3": "\\(\\dfrac{28}{15}\\)",
      "correct_answer": 0,
      "skill_id": 162,
      "difficulty_id": 2,
      "explanation": "$\\dfrac{7}{9}\\times\\dfrac{12}{5}=\\dfrac{7\\times4}{3\\times5}=\\dfrac{28}{15}=1\\dfrac{13}{15}$.",
      "hints": ["Cancel the common factor of 9 and 12 (which is 3) before multiplying.", "Convert the improper fraction to a mixed number."],
      "source": "Tao Nan 2022 P5 Weighted Assessment 1 Q6",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Mixed-number answer → MCQ per spec. Printed key: 1 13/15."
    },
    {
      "n": 7,
      "type_id": 2,
      "question": "Measure \\(\\angle a\\). [?]",
      "answer0": "93",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 140,
      "difficulty_id": 1,
      "explanation": "Using a protractor, ∠a measures 93°.",
      "hints": ["Line up the protractor base line with the horizontal line.", "Read the scale at the inclined ray."],
      "source": "Tao Nan 2022 P5 Weighted Assessment 1 Q7",
      "image_needed": true,
      "image_options": false,
      "image_file": "q7.png",
      "image_page": 3,
      "image_bbox": [0.42, 0.45, 0.66, 0.66],
      "image_loc": "middle-right of page, a vertical-ish ray meeting a horizontal line with angle a marked",
      "notes": "Answer in degrees. Printed key: 93°."
    },
    {
      "n": 8,
      "type_id": 2,
      "question": "Bala's football training ended at 6.45 p.m. It lasted for 1 hour 15 minutes. What time did the football training begin? [?] p.m.",
      "answer0": "5.30",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 135,
      "difficulty_id": 2,
      "explanation": "Start = end − duration = 6.45 p.m. − 1 h 15 min = 5.30 p.m.",
      "hints": ["Subtract the duration from the ending time.", "6.45 minus 15 min = 6.30; minus 1 h = 5.30 p.m."],
      "source": "Tao Nan 2022 P5 Weighted Assessment 1 Q8",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Answer is a time (p.m.). Printed key: 5.30."
    },
    {
      "n": 9,
      "type_id": 0,
      "question": "Shade 2 more squares so that the figure is symmetrical.",
      "answer0": null,
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 145,
      "difficulty_id": 2,
      "explanation": "Reflect the existing shaded squares across the dashed diagonal line of symmetry; shade the 2 squares that complete the mirror image (the key shows the completed symmetric pattern).",
      "hints": ["Use the dashed diagonal as the mirror line.", "Each shaded square needs its mirror image shaded too."],
      "source": "Tao Nan 2022 P5 Weighted Assessment 1 Q9",
      "image_needed": true,
      "image_options": false,
      "image_file": "q9.png",
      "image_page": 4,
      "image_bbox": [0.35, 0.32, 0.62, 0.51],
      "image_loc": "centred 6x6 grid with some shaded squares and a dashed diagonal line of symmetry",
      "notes": "Interactive shade-the-grid task; no app question type — type_id 0, skipped on insert. Answer: shade the 2 squares that mirror the existing shaded cells across the diagonal."
    },
    {
      "n": 10,
      "type_id": 2,
      "question": "The table shows the mass of paper collected by the different levels in a school for recycling.<br>Primary 1: 1 062<br>Primary 2: 987<br>Primary 3: 978<br>Primary 4: 1 216<br>Primary 5: 1 261<br>Primary 6: 1 126<br>What is the difference between the greatest and smallest mass of paper collected? [?] kg",
      "answer0": "283",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 147,
      "difficulty_id": 1,
      "explanation": "Greatest = 1 261 kg (Primary 5), smallest = 978 kg (Primary 3). Difference = 1 261 − 978 = 283 kg.",
      "hints": ["Find the largest and smallest values in the table.", "Subtract the smallest from the largest."],
      "source": "Tao Nan 2022 P5 Weighted Assessment 1 Q10",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Table transcribed into stem. Answer in kg. Printed key: 283 kg."
    },
    {
      "n": 11,
      "type_id": 2,
      "question": "Caili's house and some buildings are located as shown in the square grid. House is top-right; Market is on the left two rows below House; Clinic is bottom-left area; School is just right of Clinic; Mall is bottom-right. A compass shows North.<br>a) In which direction is the school from Caili's house? [?]<br>b) Caili started at the school. She walked 2 squares due west. At which building did she end up? [?]",
      "answer0": "South",
      "answer1": "Market",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 142,
      "difficulty_id": 2,
      "explanation": "a) The School is directly below the House on the grid, so the School is South of the House. b) Moving 2 squares due west from the School lands on the Market. (Part c, marking the new library location with a tick, is a draw-on-grid task — see notes.)",
      "hints": ["Use the compass: down the page is South.", "Due west means move left along the same row."],
      "source": "Tao Nan 2022 P5 Weighted Assessment 1 Q11",
      "image_needed": true,
      "image_options": false,
      "image_file": "q11.png",
      "image_page": 6,
      "image_bbox": [0.13, 0.30, 0.78, 0.59],
      "image_loc": "square grid with House, Market, Clinic, School, Mall labelled and a North compass arrow at the right",
      "notes": "Parts a and b are answerable FIB (a=South, b=Market). Part c (tick the library square NE of school & NW of Mall) is an interactive draw task and is omitted from blanks; key shows tick placed one square NE of School. Skill 142 (8-point compass) closest."
    },
    {
      "n": 12,
      "type_id": 2,
      "question": "The line graph shows the height of a plant measured over 4 weeks.<br>a) What was the height of the plant measured in Week 2? [?] cm<br>b) In which one-week period did the plant grow the most? Week [?] to Week [?]",
      "answer0": "5",
      "answer1": "2",
      "answer2": "3",
      "answer3": null,
      "correct_answer": null,
      "skill_id": 147,
      "difficulty_id": 2,
      "explanation": "a) Reading the graph at Week 2 gives a height of 5 cm. b) Heights: Wk1 = 2, Wk2 = 5, Wk3 = 9, Wk4 = 12. Increases: 3, 4, 3 cm; the greatest rise is Week 2 to Week 3.",
      "hints": ["Read straight up from Week 2 to the line, then across to the height axis.", "Compare the rise between each pair of consecutive weeks."],
      "source": "Tao Nan 2022 P5 Weighted Assessment 1 Q12",
      "image_needed": true,
      "image_options": false,
      "image_file": "q12.png",
      "image_page": 7,
      "image_bbox": [0.24, 0.16, 0.78, 0.40],
      "image_loc": "line graph titled 'Height of Plant Over 4 Weeks', Height(cm) vs Week",
      "notes": "Printed key: a) 5 cm, b) Week 2 to Week 3. Three blanks for the three answer values."
    },
    {
      "n": 13,
      "type_id": 2,
      "question": "Aini reached a restaurant at 19 35. After having her dinner, she left the restaurant at 20 30 and took 35 minutes to reach home.<br>a) How long was Aini at the restaurant? [?] min<br>b) What time did Aini reach home? Give your answer using the 24-hour clock. [?]",
      "answer0": "55",
      "answer1": "2105",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 135,
      "difficulty_id": 2,
      "explanation": "a) From 19 35 to 20 30 is 25 min (to 20 00) + 30 min = 55 min. b) Left at 20 30, add 35 min = 21 05.",
      "hints": ["a) Count minutes from 19 35 to 20 00, then to 20 30.", "b) Add 35 minutes to the leaving time 20 30."],
      "source": "Tao Nan 2022 P5 Weighted Assessment 1 Q13",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Printed key: a) 55 min, b) 2105 (21 05)."
    },
    {
      "n": 14,
      "type_id": 1,
      "question": "A bookshop sold \\(\\dfrac{2}{5}\\) of its blue pens in the morning and sold \\(\\dfrac{1}{4}\\) of the remainder in the afternoon. In the end, the bookshop had 45 blue pens left. What fraction of the blue pens was sold?",
      "answer0": "\\(\\dfrac{11}{20}\\)",
      "answer1": "\\(\\dfrac{9}{20}\\)",
      "answer2": "\\(\\dfrac{13}{20}\\)",
      "answer3": "\\(\\dfrac{3}{20}\\)",
      "correct_answer": 0,
      "skill_id": 165,
      "difficulty_id": 3,
      "explanation": "Remainder after morning = $1-\\dfrac{2}{5}=\\dfrac{3}{5}$. Afternoon sold = $\\dfrac{1}{4}\\times\\dfrac{3}{5}=\\dfrac{3}{20}$. Total sold = $\\dfrac{2}{5}+\\dfrac{3}{20}=\\dfrac{8}{20}+\\dfrac{3}{20}=\\dfrac{11}{20}$. (Part b: 45 pens are the 9 units left; 1 unit = 5, total 20 units = 100 pens at first.)",
      "hints": ["Find the afternoon-sold fraction of the WHOLE: 1/4 of the 3/5 remainder.", "Add the morning fraction and the afternoon fraction."],
      "source": "Tao Nan 2022 P5 Weighted Assessment 1 Q14",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Fraction answer for part a → MCQ per spec. Printed key: a) 11/20; b) 100 pens (integer part b recorded in explanation; question rendered as the fraction MCQ since the headline answer is a fraction)."
    },
    {
      "n": 15,
      "type_id": 2,
      "question": "A school bought 25 tables and chairs. A table cost $120 and a chair cost $80. The school paid a total of $2480.<br>a) How many tables were bought? [?]<br>b) How many chairs were bought? [?]",
      "answer0": "12",
      "answer1": "13",
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 152,
      "difficulty_id": 3,
      "explanation": "Assume all 25 are chairs: 25 × 80 = 2000. Extra paid = 2480 − 2000 = 480. Each table costs 120 − 80 = 40 more. Tables = 480 ÷ 40 = 12. Chairs = 25 − 12 = 13.",
      "hints": ["Suppose all 25 items were chairs and find the shortfall in cost.", "Each table adds $40 over a chair; divide the shortfall by 40."],
      "source": "Tao Nan 2022 P5 Weighted Assessment 1 Q15",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "notes": "Printed key: a) 12 tables, b) 13 chairs."
    }
  ]
}