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Primary 4 Mathematics Semestral Assessment 2 (End of Year) Paper 5

Free P4 Maths SA2 Paper 5, LongCat Exam version, with questions, answers, and syllabus-aligned practice for Singapore students.

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Questions

TuitionGoWhere Practice Paper - Mathematics Primary 4

School: TuitionGoWhere Secondary School (AI) Subject: Mathematics Level: Primary 4 Paper: SA2 (End-of-Year Examination) Version: 5 of 5 Duration: 60 minutes Total Marks: 40

Name: ________________________ Class: ________________________ Date: ________________________

Instructions to Candidates

Write your name, class, and date in the spaces provided above.
Answer ALL questions.
Show your working clearly in the space provided. Marks will be awarded for correct working even if the final answer is wrong.
Use a dark blue or black pen. You may use a pencil for diagrams.
The number of marks available is shown in brackets [ ] at the end of each question.
Do not use correction fluid.
Calculators are NOT allowed.

Section A: Multiple Choice Questions (10 marks)

Questions 1–10: Choose the correct answer (A, B, C, or D). Each question carries 1 mark.

1. In the number 63,825, which digit is in the hundreds place?

(A) 6 (B) 3 (C) 8 (D) 2

2. What does the digit 7 stand for in 47,109?

(A) 7 (B) 70 (C) 700 (D) 7,000

3. Which of the following is the correct word form of 52,030?

(A) Fifty-two thousand and three (B) Fifty-two thousand and thirty (C) Five thousand two hundred and thirty (D) Fifty-two thousand, three hundred

4. Round 38,467 to the nearest hundred.

(A) 38,400 (B) 38,460 (C) 38,500 (D) 38,470

5. 45,200 rounded to the nearest thousand is 45,000. Which digit could be in the hundreds place of the original number?

(A) 5 (B) 7 (C) 4 (D) 9

6. Which number is the greatest?

(A) 61,203 (B) 61,023 (C) 61,302 (D) 61,032

7. What is 30,000 + 5,000 + 200 + 8 in numeral form?

(A) 35,208 (B) 35,028 (C) 35,280 (D) 3,528

8. Round 91,750 to the nearest thousand.

(A) 91,000 (B) 91,700 (C) 92,000 (D) 91,800

9. In the number 80,406, the digit 0 stands for

(A) 0 (B) 0 tens (C) 0 hundreds (D) 0 thousands

10. Which of the following numbers, when rounded to the nearest thousand, gives 76,000?

(A) 75,499 (B) 75,500 (C) 76,500 (D) 76,549

Section B: Short Answer Questions (20 marks)

Questions 11–20: Write your answers in the spaces provided. Show your working where necessary.

11. Write the following in numerals.

(a) Sixty-four thousand, five hundred and twelve. [1]

(b) Thirty thousand and nine. [1]

12. Write the following in words.

(a) 81,305 [1]

(b) 50,070 [1]

13. Arrange the following numbers in order from smallest to largest.

42,187 | 42,718 | 42,087 | 42,871

________ < ________ < ________ < ________ [2]

14. Fill in the missing numbers in the number pattern.

15,240 | 16,240 | 17,240 | ________ | ________ [2]

15. Round each of the following numbers to the nearest hundred.

(a) 23,561 ≈ ________ [1]

(b) 67,849 ≈ ________ [1]

16. Round each of the following numbers to the nearest thousand.

(a) 43,299 ≈ ________ [1]

(b) 76,500 ≈ ________ [1]

17. 5□,382 rounded to the nearest thousand is 56,000. What are the possible values of □? [2]

18. Find the sum.

(a) 25,438 + 13,267 = ________ [1]

(b) 40,005 + 28,996 = ________ [1]

19. Find the difference.

(a) 62,100 − 38,456 = ________ [1]

(b) 80,003 − 45,678 = ________ [1]

20. A number rounded to the nearest ten is 47,350. What is the smallest possible value of this number? [2]

Section C: Problem Sums (10 marks)

Questions 21–22: Solve the following problem sums. Show all your working clearly.

21. The table below shows the number of books in four school libraries.

Library	Number of Books
Red	32,485
Blue	31,950
Green	32,504
Yellow	32,049

(a) Which library has the greatest number of books? [1]

(b) Round the number of books in the Red Library to the nearest hundred. [1]

22. A factory produced 45,678 toys in January and 38,592 toys in February.

(a) How many toys did the factory produce in the two months altogether? [2]

(b) Round your answer in (a) to the nearest thousand. [1]

End of Paper

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Answers

TuitionGoWhere Practice Paper - Mathematics Primary 4

SA2 — Version 5 of 5

Answer Key and Marking Scheme

Section A: Multiple Choice Questions (10 marks)

1. (C) 8 [1]

Working: In 63,825, the digits from left to right are: 6 (ten thousands), 3 (thousands), 8 (hundreds), 2 (tens), 5 (ones). The digit in the hundreds place is 8.

2. (D) 7,000 [1]

Working: In 47,109, the digit 7 is in the thousands place. 7 × 1,000 = 7,000.

3. (B) Fifty-two thousand and thirty [1]

Working: 52,030 = 52,000 + 30 = Fifty-two thousand and thirty.

4. (C) 38,500 [1]

Working: To round 38,467 to the nearest hundred, look at the tens digit (6). Since 6 ≥ 5, round up: 38,467 ≈ 38,500.

5. (C) 4 [1]

Working: For 45,200 to round to 45,000 (nearest thousand), the hundreds digit must be less than 5. The hundreds digit is 2, which is < 5. Among the options, only 4 is < 5. If the hundreds digit were 5, 7, or 9, the number would round to 46,000.

6. (C) 61,302 [1]

Working: All numbers start with 61. Compare the hundreds digit: 2, 0, 3, 0. The largest hundreds digit is 3, so 61,302 is the greatest.

7. (A) 35,208 [1]

Working: 30,000 + 5,000 + 200 + 8 = 35,208.

8. (C) 92,000 [1]

Working: To round 91,750 to the nearest thousand, look at the hundreds digit (7). Since 7 ≥ 5, round up: 91,750 ≈ 92,000.

9. (C) 0 hundreds [1]

Working: In 80,406, the digit 0 is in the hundreds place. It stands for 0 hundreds (i.e., 0 × 100 = 0). Note: While the value is numerically 0, the place value context is "0 hundreds."

10. (B) 75,500 [1]

Working: Round each option to the nearest thousand.
- (A) 75,499 → hundreds digit is 4 → rounds to 75,000 ✗
- (B) 75,500 → hundreds digit is 5 → rounds up to 76,000 ✓
- (C) 76,500 → hundreds digit is 5 → rounds up to 77,000 ✗
- (D) 76,549 → hundreds digit is 5 → rounds up to 77,000 ✗

Section B: Short Answer Questions (20 marks)

11.

(a) 64,512 [1]

Working: 64,000 + 500 + 12 = 64,512.

(b) 30,009 [1]

Working: 30,000 + 9 = 30,009. Note: No hundreds and no tens, so zeros go in those places.

12.

(a) Eighty-one thousand, three hundred and five [1]

Working: 81,000 + 300 + 5 = Eighty-one thousand, three hundred and five.

(b) Fifty thousand and seventy [1]

Working: 50,000 + 70 = Fifty thousand and seventy. Note: No hundreds, so "and seventy" is used.

13. 42,087 < 42,187 < 42,718 < 42,871 [2]

Working: All numbers start with 42. Compare the hundreds digit: 0, 1, 7, 8. So the order is 42,087, 42,187, 42,718, 42,871.
Marking: Award 2 marks for all correct. Award 1 mark if 2 or 3 numbers are in the correct position.

14. 18,240 and 19,240 [2]

Working: The pattern increases by 1,000 each time. 17,240 + 1,000 = 18,240; 18,240 + 1,000 = 19,240.
Marking: 1 mark for each correct answer.

15.

(a) 23,561 ≈ 23,600 [1]

Working: Tens digit is 6 (≥ 5), so round up the hundreds place: 23,561 ≈ 23,600.

(b) 67,849 ≈ 67,800 [1]

Working: Tens digit is 4 (< 5), so round down: 67,849 ≈ 67,800.

Working: Tens digit is 5 (≥ 5), so round up: 84,050 ≈ 84,100.

16.

(a) 43,299 ≈ 43,000 [1]

Working: Hundreds digit is 2 (< 5), so round down: 43,299 ≈ 43,000.

(b) 76,500 ≈ 77,000 [1]

Working: Hundreds digit is 5 (≥ 5), so round up: 76,500 ≈ 77,000.

Working: Hundreds digit is 4 (< 5), so round down: 99,499 ≈ 99,000.

17. □ = 5 or 6 [2]

Working: 5□,382 rounded to the nearest thousand is 56,000. This means the original number is between 55,500 and 56,499. So 5□,382 must have □ = 5 (giving 55,382) or □ = 6 (giving 56,382). Both round to 56,000.
Note: 55,382 → hundreds digit is 3 (< 5) → rounds to 55,000. This is incorrect. Let me re-check.
Correction: For 5□,382 to round to 56,000 (nearest thousand), the number must be from 55,500 to 56,499. If □ = 5, the number is 55,382. Hundreds digit is 3 → rounds to 55,000 ✗. If □ = 6, the number is 56,382. Hundreds digit is 3 → rounds to 56,000 ✓. So □ = 6 only.
Wait — let me reconsider. The thousands digit is □. The number is 5□,382. For rounding to nearest thousand, we look at the hundreds digit, which is 3. Since 3 < 5, we always round down. So 5□,382 ≈ 5□,000. For this to equal 56,000, □ must be 6.
Answer: □ = 6 [2]
Marking: Award 2 marks for the correct answer. Award 1 mark for showing correct reasoning about the hundreds digit.

18.

(a) 25,438 + 13,267 = 38,705 [1]

Working:
```
  25,438
+ 13,267
________
  38,705
```

(b) 40,005 + 28,996 = 69,001 [1]

Working:
```
  40,005
+ 28,996
________
  69,001
```

19.

(a) 62,100 − 38,456 = 23,644 [1]

Working:
```
  62,100
− 38,456
________
  23,644
```

(b) 80,003 − 45,678 = 34,325 [1]

Working:
```
  80,003
− 45,678
________
  34,325
```

20. Smallest possible value = 47,345 [2]

Working: When rounding to the nearest ten, numbers from 47,345 to 47,354 round to 47,350. The smallest is 47,345.
Explanation: To round to 47,350 (nearest ten), the ones digit must be 5 or more to round up, or 4 or less to round down. The smallest number that rounds to 47,350 is 47,345 (ones digit = 5, rounds up from 47,340s to 47,350).
Marking: Award 2 marks for correct answer with working. Award 1 mark for correct answer only.

Section C: Problem Sums (10 marks)

21.

(a) Green Library [1]

Working: Compare the numbers: 32,485; 31,950; 32,504; 32,049. The greatest is 32,504 (Green Library).

(b) 32,485 ≈ 32,500 [1]

Working: Round 32,485 to the nearest hundred. Tens digit is 8 (≥ 5), so round up: 32,485 ≈ 32,500.

Working:
```
  31,950
+ 32,049
________
  63,999
```
Marking: Award 2 marks for correct answer with working. Award 1 mark for correct working but wrong final answer.

22.

(a) 45,678 + 38,592 = 84,270 toys [2]

Working:
```
  45,678
+ 38,592
________
  84,270
```
Marking: Award 2 marks for correct answer with working. Award 1 mark for correct working but wrong final answer.

(b) 84,270 ≈ 84,000 [1]

Working: Round 84,270 to the nearest thousand. Hundreds digit is 2 (< 5), so round down: 84,270 ≈ 84,000.

Working:
```
  45,678
− 12,500
________
  33,178
```
Marking: Award 2 marks for correct answer with working. Award 1 mark for correct working but wrong final answer.

Total: 40 marks

Common Mistakes to Watch For

Q1/Q2: Students may confuse the digit itself with its place value. E.g., in Q2, the digit 7 in 47,109 is 7,000, not just 7.
Q11(b): "Thirty thousand and nine" = 30,009. Students often write 30,090 or 30,900.
Q17: Students may forget that rounding to the nearest thousand depends on the hundreds digit, not the thousands digit.
Q20: Students may think the smallest number is 47,350 itself, but 47,345 also rounds to 47,350.
Q15(c): 84,050 — the tens digit is 5, so round up to 84,100. Students may leave it as 84,000.