Primary 2 Mathematics Practice Paper 1

TuitionGoWhere Practice Paper — Answer Key

Mathematics Primary 2 — Numbers (Whole Numbers up to 1000)

Version 1 of 5

Section A: Place Value (Questions 1–5)

1. What is the value of the digit 6 in the number 638?

• Answer: 600
• Marks: 1
• Working: The digit 6 is in the hundreds place. Value = 6 × 100 = 600.
• Common mistake: Writing "6" instead of "600." Remind students that "value" means the worth of the digit based on its place.

2. Which digit is in the tens place in the number 472?

• Answer: 7
• Marks: 1
• Working: In 472, the digits from left to right are: 4 (hundreds), 7 (tens), 2 (ones). The tens digit is 7.

3. Write the number five hundred and twenty-three in numerals.

• Answer: 523
• Marks: 1
• Working: Five hundred = 500, twenty = 20, three = 3. Combined: 500 + 20 + 3 = 523.

4. What is the value of the digit 3 in the number 735?

• Answer: 30
• Marks: 1
• Working: The digit 3 is in the tens place. Value = 3 × 10 = 30.
• Common mistake: Writing "3" instead of "30." The digit is 3, but its value is 30.

5. Write 800 + 50 + 9 as a single number.

• Answer: 859
• Marks: 1
• Working: 800 + 50 + 9 = 859. This is the expanded form of 859.

Section B: Comparing and Ordering Numbers (Questions 6–10)

6. Arrange in order from smallest to biggest: 345, 543, 435, 354

• Answer: 345, 354, 435, 543
• Marks: 2
• Working:
  • All numbers have 3 hundreds, so compare tens: 345 (4 tens), 354 (5 tens), 435 (3 tens), 543 (4 tens).
  • Between 345 and 354: 345 < 354 (4 tens < 5 tens).
  • Between 435 and 543: 435 < 543 (4 hundreds < 5 hundreds).
  • Full order: 345 < 354 < 435 < 543.
• Marking: Award 2 marks for all four in correct order. Award 1 mark if at least two adjacent numbers are in the correct relative position.

7. Fill in the blank with >, <, or =: 627 ____ 672

• Answer: <
• Marks: 2
• Working: Both numbers have 6 hundreds. Compare tens: 2 tens < 7 tens. So 627 < 672.
• Common mistake: Students may look at the ones digit (7 vs 2) instead of the tens digit. Remind them to compare place by place from left to right.

8. Which is the biggest number among: 289, 298, 829, 892?

• Answer: 892
• Marks: 2
• Working: Compare hundreds: 829 and 892 both have 8 hundreds (bigger than 2). Between 829 and 892, compare tens: 9 tens > 2 tens. So 892 is the biggest.

9. Arrange in order from biggest to smallest: 701, 710, 170, 107

• Answer: 710, 701, 170, 107
• Marks: 2
• Working:
  • 710 and 701 both have 7 hundreds. Compare tens: 1 ten > 0 tens, so 710 > 701.
  • 170 and 107 both have 1 hundred. Compare tens: 7 tens > 0 tens, so 170 > 107.
  • Full order: 710 > 701 > 170 > 107.
• Marking: Award 2 marks for all four in correct order. Award 1 mark for partial correct ordering.

10. Fill in the blank with >, <, or =: 500 + 30 + 6 ____ 536

• Answer: =
• Marks: 2
• Working: 500 + 30 + 6 = 536. Both sides are equal.
• Common mistake: Students may not simplify the left side first. Encourage them to add before comparing.

Section C: Number Patterns (Questions 11–15)

11. Find the missing numbers: 100, 200, 300, _____, _____

• Answer: 400, 500
• Marks: 2
• Working: The pattern increases by 100 each time. 300 + 100 = 400, 400 + 100 = 500.

12. Find the missing numbers: 950, 850, 750, _____, _____

• Answer: 650, 550
• Marks: 2
• Working: The pattern decreases by 100 each time. 750 − 100 = 650, 650 − 100 = 550.

13. Find the missing numbers: 425, 450, 475, _____, _____

• Answer: 500, 525
• Marks: 2
• Working: The pattern increases by 25 each time. 475 + 25 = 500, 500 + 25 = 525.
• Common mistake: Students may add 50 instead of 25. Encourage them to find the difference between consecutive terms.

14. Find the missing numbers: 600, 580, 560, _____, _____

• Answer: 540, 520
• Marks: 2
• Working: The pattern decreases by 20 each time. 560 − 20 = 540, 540 − 20 = 520.

15. Find the missing numbers: 150, 250, 350, _____, _____

• Answer: 450, 550
• Marks: 2
• Working: The pattern increases by 100 each time. 350 + 100 = 450, 450 + 100 = 550.

Section D: Odd and Even Numbers (Questions 16–20)

16. Circle all the even numbers: 23, 46, 51, 84, 97

• Answer: 46, 84
• Marks: 2
• Working: Even numbers end in 0, 2, 4, 6, or 8. From the list: 46 (ends in 6) and 84 (ends in 4) are even.
• Marking: Award 2 marks for both correct. Award 1 mark if only one is correct and no odd numbers are selected.

17. Circle all the odd numbers: 30, 55, 62, 79, 100

• Answer: 55, 79
• Marks: 2
• Working: Odd numbers end in 1, 3, 5, 7, or 9. From the list: 55 (ends in 5) and 79 (ends in 9) are odd.
• Marking: Award 2 marks for both correct. Award 1 mark if only one is correct and no even numbers are selected.

18. Is the number 448 odd or even? Explain how you know.

• Answer: Even
• Marks: 2
• Working: 448 ends in 8. Numbers that end in 0, 2, 4, 6, or 8 are even numbers. Therefore, 448 is even.
• Acceptable explanation: "It ends in 8, which is an even number" or "It can be divided by 2 equally."
• Marking: Award 1 mark for correct identification (even) and 1 mark for a valid explanation.

19. Write down two odd numbers between 200 and 210.

• Answer: 201, 203 (or any two of: 201, 203, 205, 207, 209)
• Marks: 2
• Working: Numbers between 200 and 210 are 201–209. Odd numbers in this range end in 1, 3, 5, 7, or 9.
• Marking: Award 2 marks for any two correct odd numbers. Award 1 mark for one correct odd number.

20. A number ends in 4. Is it odd or even? Explain your answer.

• Answer: Even
• Marks: 2
• Working: All numbers that end in 4 are even numbers. This is because 4 is an even digit, and any number ending in an even digit is even.
• Acceptable explanation: "Numbers ending in 4 are always even" or "4 can be shared equally between 2 people (4 ÷ 2 = 2)."
• Marking: Award 1 mark for correct identification (even) and 1 mark for a valid explanation.

Total Marks: 40

This practice paper was generated syllabus-first; no past-paper evidence was available for this topic at this level. Content is aligned to the 2021 MOE Primary Mathematics Syllabus (P1–P6).