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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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Primary 4 Mathematics From Real Exams Generated by Ox Alpha Updated 2026-08-27

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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)

QuestionAnswerExplanation
1BIn 84,267, the digit 4 is in the thousands place.
2CThe 9 is in the hundreds place, so it stands for 900.
3C68,549 → the hundreds digit is 5, so round up to 69,000.
4BSixty thousand and forty-two = 60,042.
5C44,999 is the smallest (compare ten-thousands digits first).

Section B: Short-Answer Questions (2 marks each)

QuestionAnswerWorking / Explanation
674,30870,000 + 4,000 + 300 + 8 = 74,308.
714,000 and 14,500Pattern increases by 500 each time.
839,500Tens digit is 0, so round down; 39,506 ≈ 39,500.
972024 × 3 = 72, so 24 × 30 = 720.
101,25010,000 − 8,750 = 1,250.

Section C: Calculations (3 marks each — 1 mark method, 2 marks accuracy)

QuestionAnswerWorking
117,4154,836 + 2,579 = 7,415 (column addition).
122,3286,204 − 3,876 = 2,328 (column subtraction with regrouping).
131,70237 × 46 = 37 × 40 + 37 × 6 = 1,480 + 222 = 1,702.
14108864 ÷ 8 = 108 (long division). Check: 108 × 8 = 864.
1525,499Largest 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: 4,900Sitissavings:3×2,450=7,350Difference:7,3502,450=4,900Sitisaved4,900** Siti's savings: 3 × 2,450 = 7,350 Difference: 7,350 − 2,450 = 4,900 Siti saved 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.