Primary 2 Mathematics Practice Paper 5

TuitionGoWhere Practice Paper — Answer Key

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

Version 5 of 5

Section A: Place Value and Number Recognition (10 marks)

Question 1 (2 marks)

• Answer: 600
• Working: In 683, the digit 6 is in the hundreds place. Value of 6 = 6 × 100 = 600.
• Marking: Award 2 marks for the correct answer. Award 1 mark if the student writes "6 hundreds" or shows understanding of place value but gives an incorrect final value.

Question 2 (2 marks)

• Answer: 427
• Working: Four hundred = 400, twenty = 20, seven = 7. So 400 + 20 + 7 = 427.
• Marking: Award 2 marks for the correct answer. Award 1 mark for a partially correct answer (e.g., 4027 or 472) showing some place value understanding.

Question 3 (2 marks)

• Answer: 1
• Working: In 915, the digits from left to right are: 9 (hundreds), 1 (tens), 5 (ones). The digit in the tens place is 1.
• Marking: Award 2 marks for the correct answer. Award 1 mark if the student confuses the digit with its value (writes 10 instead of 1) — note this as a common mistake.

Question 4 (2 marks)

• Answer: 70
• Working: 578 = 500 + ___ + 8. Subtract: 578 − 500 − 8 = 70.
• Marking: Award 2 marks for the correct answer. Award 1 mark for a reasonable attempt at expanded form.

Question 5 (2 marks)

• Answer: 400
• Working: In 409, the digit 4 is in the hundreds place. Value of 4 = 4 × 100 = 400.
• Marking: Award 2 marks for the correct answer. Award 1 mark if the student writes "4 hundreds" without converting to 400.

Section B: Comparing, Ordering, and Number Patterns (15 marks)

Question 6 (2 marks)

• Answer: 718, 724, 742, 789
• Working: Compare the hundreds digit first (all are 7). Then compare tens: 1 < 2 < 4 < 8. So: 718 < 724 < 742 < 789.
• Marking: Award 2 marks for the correct order. Award 1 mark if 2 or 3 numbers are in the correct position.

Question 7 (1 mark)

• Answer: 341
• Working: Compare hundreds: all have 3 hundreds. Compare tens: 4 < 5 < 6 < 9. So 341 is the smallest.
• Marking: Award 1 mark for the correct answer only.

Question 8 (1 mark)

• Answer: <
• Working: 623 and 632 both have 6 hundreds. Compare tens: 2 < 3. So 623 < 632.
• Marking: Award 1 mark for the correct symbol.

Question 9 (2 marks)

• Answer: 300, 350
• Working: The pattern increases by 50 each time. 250 + 50 = 300, 300 + 50 = 350.
• Marking: Award 2 marks for both correct answers. Award 1 mark for one correct answer.

Question 10 (1 mark)

• Answer: 562
• Working: An even number ends in 0, 2, 4, 6, or 8. 562 ends in 2, so it is even. 437 (ends in 7), 319 (ends in 9), and 881 (ends in 1) are odd.
• Marking: Award 1 mark for the correct answer.

Question 11 (2 marks)

• Answer: 490, 465, 456, 412
• Working: All have 4 hundreds. Compare tens: 9 > 6 > 5 > 1. So: 490 > 465 > 456 > 412.
• Marking: Award 2 marks for the correct order. Award 1 mark if 2 or 3 numbers are in the correct position.

Question 12 (1 mark)

• Answer: 799
• Working: The number just before 800 is 800 − 1 = 799.
• Marking: Award 1 mark for the correct answer.

Question 13 (1 mark)

• Answer: 600
• Working: The number just after 599 is 599 + 1 = 600.
• Marking: Award 1 mark for the correct answer. Common mistake: Students may write 598 or 601. Remind them to add 1.

Question 14 (2 marks)

• Answer: 750, 700
• Working: The pattern decreases by 50 each time. 800 − 50 = 750, 750 − 50 = 700.
• Marking: Award 2 marks for both correct answers. Award 1 mark for one correct answer.

Question 15 (1 mark)

• Answer: 370
• Working: Counting in tens: 360 + 10 = 370.
• Marking: Award 1 mark for the correct answer.

Section C: Odd and Even Numbers and Word Problems (15 marks)

Question 16 (3 marks)

• Answer:
  • (a) Even numbers: 234, 890, 756
  • (b) Odd numbers: 567, 421, 333
• Working: Even numbers end in 0, 2, 4, 6, or 8. Odd numbers end in 1, 3, 5, 7, or 9.
  • 234 → ends in 4 → even ✓
  • 567 → ends in 7 → odd ✓
  • 890 → ends in 0 → even ✓
  • 421 → ends in 1 → odd ✓
  • 756 → ends in 6 → even ✓
  • 333 → ends in 3 → odd ✓
• Marking: Award 1 mark for all even numbers correct, 1 mark for all odd numbers correct, and 1 mark for correct classification of all six numbers. Deduct ½ mark per misclassified number.

Question 17 (3 marks)

• Answer:
  • (a) 485 stickers
  • (b) Odd
• Working:
  • (a) 385 + 100 = 485. Add 1 hundred to 385: 3 hundreds + 1 hundred = 4 hundreds, so 485.
  • (b) 485 ends in 5, which is an odd digit. So 485 is an odd number.
• Marking: Award 2 marks for part (a): 1 mark for correct working, 1 mark for correct answer. Award 1 mark for part (b).

Question 18 (3 marks)

• Answer:
  • (a) 296 stamps
  • (b) 90
• Working:
  • (a) 256 + 40 = 296. Add 4 tens to 256: 5 tens + 4 tens = 9 tens, so 296.
  • (b) In 296, the digit 9 is in the tens place. Value of 9 = 9 × 10 = 90.
• Marking: Award 2 marks for part (a): 1 mark for correct working, 1 mark for correct answer. Award 1 mark for part (b). If the student writes "9" instead of "90", award ½ mark (common mistake: confusing digit with value).

Question 19 (3 marks)

• Answer:
  • (a) 1252 apples
  • (b) 92 apples
• Working:
  • (a) 672 + 580:
    • Ones: 2 + 0 = 2
    • Tens: 7 + 8 = 15 tens = 150, write 5 in tens place, carry 1 hundred
    • Hundreds: 6 + 5 + 1 (carried) = 12 hundreds = 1200
    • Total: 1200 + 50 + 2 = 1252
  • (b) 672 − 580:
    • Ones: 2 − 0 = 2
    • Tens: 7 − 8 (cannot do, borrow 1 hundred) → 17 − 8 = 9
    • Hundreds: 5 − 5 = 0 (after borrowing)
    • Answer: 92
• Marking: Award 2 marks for part (a): 1 mark for correct working, 1 mark for correct answer. Award 1 mark for part (b). Accept alternative valid methods.

Question 20 (3 marks)

• Answer:
  • (a) 730, 732, 734, 736, or 738 (accept any one)
  • (b) The number must be between 700 and 800, so it starts with 7. The tens digit must be 3, so the number is 73_. For it to be even, the ones digit must be 0, 2, 4, 6, or 8. So possible answers are 730, 732, 734, 736, or 738.
• Working: Apply each clue step by step to narrow down the possibilities.
• Marking: Award 1 mark for a correct number in part (a). Award 2 marks for part (b): 1 mark for identifying the range and tens digit, 1 mark for applying the even number rule. Accept any valid explanation.

Total: 40 marks

This answer key is for a syllabus-aligned practice paper generated by TuitionGoWhere AI. It is not derived from past-year examination papers.