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Primary 4 Mathematics Semestral Assessment 2 (End of Year) Paper 1
Free P4 Maths SA2 Paper 1, Ox Exam version, with questions, answers, and syllabus-aligned practice for Singapore students.
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TuitionGoWhere Practice Paper - Mathematics Primary 4
SA2 Practice Paper - Whole Numbers (Version 1 of 5) — ANSWER KEY
Total Marks: 50
Section A: Multiple-Choice Questions (1 mark each)
| Question | Answer | Explanation |
|---|---|---|
| 1 | B | In 84,267, the digit 4 is in the thousands place. |
| 2 | C | The 9 is in the hundreds place, so it stands for 900. |
| 3 | C | 68,549 → the hundreds digit is 5, so round up to 69,000. |
| 4 | B | Sixty thousand and forty-two = 60,042. |
| 5 | C | 44,999 is the smallest (compare ten-thousands digits first). |
Section B: Short-Answer Questions (2 marks each)
| Question | Answer | Working / Explanation |
|---|---|---|
| 6 | 74,308 | 70,000 + 4,000 + 300 + 8 = 74,308. |
| 7 | 14,000 and 14,500 | Pattern increases by 500 each time. |
| 8 | 39,500 | Tens digit is 0, so round down; 39,506 ≈ 39,500. |
| 9 | 720 | 24 × 3 = 72, so 24 × 30 = 720. |
| 10 | 1,250 | 10,000 − 8,750 = 1,250. |
Section C: Calculations (3 marks each — 1 mark method, 2 marks accuracy)
| Question | Answer | Working |
|---|---|---|
| 11 | 7,415 | 4,836 + 2,579 = 7,415 (column addition). |
| 12 | 2,328 | 6,204 − 3,876 = 2,328 (column subtraction with regrouping). |
| 13 | 1,702 | 37 × 46 = 37 × 40 + 37 × 6 = 1,480 + 222 = 1,702. |
| 14 | 108 | 864 ÷ 8 = 108 (long division). Check: 108 × 8 = 864. |
| 15 | 25,499 | Largest number rounding down to 25,000 is 25,499. |
Section D: Word Problems (4 marks each — 1-2 marks method, 2-3 marks accuracy/units)
Question 16 — Ans: 1,189 stickers 3,450 − 1,275 = 2,175 2,175 − 986 = 1,189 There were 1,189 stickers left.
Question 17 — Ans: 54 oranges 18 × 24 = 432 oranges 432 ÷ 8 = 54 There were 54 oranges in each bag.
Question 18 — Ans: 3,575 9,600 − 2,450 = 7,150 7,150 ÷ 2 = 3,575 The smaller number is 3,575. (Check: 3,575 + 6,025 = 9,600.)
Question 19 — Ans: 105 crates 175 × 12 = 2,100 toys 2,100 ÷ 20 = 105 105 crates are needed.
**Question 20 — Ans: 4,900 more than Ravi.
Marking note: Award full method marks where the correct strategy is shown even if a calculation slip occurs. Accept equivalent valid methods.