Primary 2 Mathematics Multiplication Division Quiz

Answer Key: Primary 2 Mathematics Quiz - Multiplication Division

Section A: Multiplication Facts (Questions 1 to 5)

(1 mark each)

1. 3 × 5 = ____

• Answer: 15
• Explanation: 3 groups of 5 is 5 + 5 + 5 = 15. This is a basic fact from the 5 times table.
• Marking: 1 mark for correct answer.

2. 4 × 6 = ____

• Answer: 24
• Explanation: 4 groups of 6 is 6 + 6 + 6 + 6 = 24. This is a fact from the 4 times table.
• Marking: 1 mark for correct answer.

3. 2 × 9 = ____

• Answer: 18
• Explanation: 2 groups of 9 is 9 + 9 = 18. This is a fact from the 2 times table.
• Marking: 1 mark for correct answer.

4. 10 × 7 = ____

• Answer: 70
• Explanation: 10 groups of 7 is 7 × 10 = 70. Multiplying by 10 is easy: just add a zero to the other number.
• Marking: 1 mark for correct answer.

5. 5 × 8 = ____

• Answer: 40
• Explanation: 5 groups of 8 is 8 + 8 + 8 + 8 + 8 = 40. This is a fact from the 5 times table.
• Marking: 1 mark for correct answer.

Section B: Division Facts (Questions 6 to 10)

(1 mark each)

6. 20 ÷ 5 = ____

• Answer: 4
• Explanation: 20 divided into groups of 5 gives 4 groups. Think: 5 × 4 = 20, so 20 ÷ 5 = 4.
• Marking: 1 mark for correct answer.

7. 12 ÷ 3 = ____

• Answer: 4
• Explanation: 12 divided into groups of 3 gives 4 groups. Think: 3 × 4 = 12, so 12 ÷ 3 = 4.
• Marking: 1 mark for correct answer.

8. 30 ÷ 10 = ____

• Answer: 3
• Explanation: 30 divided into groups of 10 gives 3 groups. Think: 10 × 3 = 30, so 30 ÷ 10 = 3.
• Marking: 1 mark for correct answer.

9. 16 ÷ 4 = ____

• Answer: 4
• Explanation: 16 divided into groups of 4 gives 4 groups. Think: 4 × 4 = 16, so 16 ÷ 4 = 4.
• Marking: 1 mark for correct answer.

10. 14 ÷ 2 = ____

• Answer: 7
• Explanation: 14 divided into groups of 2 gives 7 groups. Think: 2 × 7 = 14, so 14 ÷ 2 = 7.
• Marking: 1 mark for correct answer.

Section C: Word Problems (Questions 11 to 15)

(2 marks each)

11. There are 4 bags of apples. Each bag has 6 apples. How many apples are there altogether?

• Answer: 24 apples
• Working: 4 × 6 = 24
• Explanation: This is a multiplication problem. "4 bags of 6 apples each" means 4 groups of 6. We multiply 4 × 6 = 24.
• Marking: 1 mark for correct working (4 × 6), 1 mark for correct answer (24). Accept any correct method.

12. Mrs Tan has 15 sweets. She wants to share them equally among 3 children. How many sweets will each child get?

• Answer: 5 sweets
• Working: 15 ÷ 3 = 5
• Explanation: This is a division problem. Sharing 15 sweets equally among 3 children means dividing 15 by 3. 15 ÷ 3 = 5.
• Marking: 1 mark for correct working (15 ÷ 3), 1 mark for correct answer (5). Accept any correct method.

13. A packet of biscuits costs $2. How much do 5 packets of biscuits cost?

• Answer: $10
• Working: 5 × $2 =$10
• Explanation: This is a multiplication problem. 5 packets at $2 each means 5 groups of$2. We multiply 5 × 2 = 10.
• Marking: 1 mark for correct working (5 × 2), 1 mark for correct answer ($10). Accept any correct method.

14. There are 24 chairs in a hall. They are arranged in 4 equal rows. How many chairs are there in each row?

• Answer: 6 chairs
• Working: 24 ÷ 4 = 6
• Explanation: This is a division problem. 24 chairs divided into 4 equal rows means dividing 24 by 4. 24 ÷ 4 = 6.
• Marking: 1 mark for correct working (24 ÷ 4), 1 mark for correct answer (6). Accept any correct method.

15. A box has 10 pencils. How many pencils are there in 3 such boxes?

• Answer: 30 pencils
• Working: 3 × 10 = 30
• Explanation: This is a multiplication problem. 3 boxes of 10 pencils each means 3 groups of 10. We multiply 3 × 10 = 30.
• Marking: 1 mark for correct working (3 × 10), 1 mark for correct answer (30). Accept any correct method.

Section D: Mixed Problems (Questions 16 to 20)

(2 marks each)

16. Fill in the missing number: 7 × ____ = 28

• Answer: 4
• Explanation: We need to find what number multiplied by 7 gives 28. Think of the 7 times table: 7 × 1 = 7, 7 × 2 = 14, 7 × 3 = 21, 7 × 4 = 28. So the missing number is 4. Alternatively, 28 ÷ 7 = 4.
• Marking: 1 mark for correct working or reasoning, 1 mark for correct answer (4).

17. Fill in the missing number: ____ ÷ 4 = 5

• Answer: 20
• Explanation: We need to find what number divided by 4 gives 5. Think: 5 × 4 = 20, so 20 ÷ 4 = 5. The missing number is 20.
• Marking: 1 mark for correct working or reasoning, 1 mark for correct answer (20).

18. Lily has 18 stickers. She puts them into 3 groups with the same number of stickers in each group. How many stickers are in each group?

• Answer: 6 stickers
• Working: 18 ÷ 3 = 6
• Explanation: This is a division problem. 18 stickers divided into 3 equal groups means dividing 18 by 3. 18 ÷ 3 = 6.
• Marking: 1 mark for correct working (18 ÷ 3), 1 mark for correct answer (6). Accept any correct method.

19. A baker bakes 30 buns. He puts them into trays of 5 buns each. How many trays does he need?

• Answer: 6 trays
• Working: 30 ÷ 5 = 6
• Explanation: This is a division problem. 30 buns divided into groups of 5 means dividing 30 by 5. 30 ÷ 5 = 6.
• Marking: 1 mark for correct working (30 ÷ 5), 1 mark for correct answer (6). Accept any correct method.

20. There are 4 rows of chairs. Each row has 8 chairs. 5 chairs are taken away. How many chairs are left?

• Answer: 27 chairs
• Working: First, find the total number of chairs: 4 × 8 = 32. Then, subtract the chairs taken away: 32 - 5 = 27.
• Explanation: This is a two-step problem. First, we multiply to find the total number of chairs (4 rows × 8 chairs per row = 32 chairs). Then, we subtract the 5 chairs that are taken away (32 - 5 = 27).
• Marking: 1 mark for correct first step (4 × 8 = 32), 1 mark for correct second step and final answer (27). Accept any correct method. Award 1 mark if only the first step is correct.