Primary 1 Mathematics Multiplication Division Quiz

Answer Key: Primary 1 Mathematics Quiz - Multiplication Division

Total Marks: 20

Section A: Multiplication (Questions 1 – 10)

1. Draw 2 groups of 3 stars. How many stars are there altogether? Answer: 6 stars [1 mark] Explanation: 2 groups of 3 means 3 + 3 = 6. The student should draw two groups, each with 3 stars, and count all the stars to get 6. Marking note: Award 1 mark for correct answer. Accept any clear drawing showing 2 groups of 3.

2. Write an addition sentence and a multiplication sentence for the picture. Addition: 2 + 2 + 2 + 2 = 8 [1 mark] Multiplication: 4 × 2 = 8 [1 mark] Explanation: There are 4 groups of 2 apples. Addition means adding the groups: 2 + 2 + 2 + 2 = 8. Multiplication means 4 groups of 2: 4 × 2 = 8. Marking note: Award 1 mark for each correct sentence. Accept 2 × 4 = 8 as equivalent.

3. There are 5 plates. Each plate has 4 biscuits. How many biscuits are there altogether? Answer: 20 biscuits [2 marks] Explanation: 5 plates × 4 biscuits per plate = 20 biscuits. This is repeated addition: 4 + 4 + 4 + 4 + 4 = 20. Marking note: Award 1 mark for correct method (e.g., showing 5 × 4 or repeated addition) and 1 mark for correct answer.

4. Fill in the blank: 3 × 5 = ________ Answer: 15 [1 mark] Explanation: 3 × 5 means 3 groups of 5, or 5 + 5 + 5 = 15. Marking note: Award 1 mark for correct answer.

5. What is 2 × 6? Answer: 12 [1 mark] Explanation: 2 × 6 means 2 groups of 6, or 6 + 6 = 12. Marking note: Award 1 mark for correct answer.

6. Draw 3 groups of 4 circles. Write the multiplication sentence. Multiplication sentence: 3 × 4 = 12 [2 marks] Explanation: 3 groups of 4 circles means 3 × 4 = 12. The student should draw three groups, each with 4 circles, and write the multiplication sentence. Marking note: Award 1 mark for correct drawing (3 groups of 4 circles) and 1 mark for correct multiplication sentence. Accept 4 × 3 = 12 as equivalent.

7. A box has 10 sweets. How many sweets are there in 2 boxes? Answer: 20 sweets [1 mark] Explanation: 2 boxes × 10 sweets per box = 20 sweets. This is 10 + 10 = 20. Marking note: Award 1 mark for correct answer.

8. 4 × 2 = ________ Answer: 8 [1 mark] Explanation: 4 × 2 means 4 groups of 2, or 2 + 2 + 2 + 2 = 8. Marking note: Award 1 mark for correct answer.

9. There are 3 bags. Each bag has 5 oranges. How many oranges are there in all? Answer: 15 oranges [2 marks] Explanation: 3 bags × 5 oranges per bag = 15 oranges. Repeated addition: 5 + 5 + 5 = 15. Marking note: Award 1 mark for correct method and 1 mark for correct answer.

10. Fill in the missing number: 2 × ________ = 8 Answer: 4 [1 mark] Explanation: 2 × ? = 8 means 2 groups of something equals 8. 2 × 4 = 8, so the missing number is 4. Marking note: Award 1 mark for correct answer.

Section B: Division (Questions 11 – 20)

11. Share 12 sweets equally among 4 children. How many sweets does each child get? Answer: 3 sweets [2 marks] Explanation: 12 sweets shared among 4 children means 12 ÷ 4 = 3. Each child gets 3 sweets. The student can draw 12 sweets and circle them into 4 groups of 3. Marking note: Award 1 mark for correct method (e.g., drawing or showing 12 ÷ 4) and 1 mark for correct answer.

12. 10 fish are put into 2 tanks. Each tank has the same number of fish. How many fish are in each tank? Answer: 5 fish [1 mark] Explanation: 10 fish shared equally into 2 tanks means 10 ÷ 2 = 5. Each tank has 5 fish. Marking note: Award 1 mark for correct answer.

13. 8 stickers are shared equally between 2 friends. How many stickers does each friend get? Answer: 4 stickers [1 mark] Explanation: 8 stickers shared between 2 friends means 8 ÷ 2 = 4. Each friend gets 4 stickers. Marking note: Award 1 mark for correct answer.

14. 15 marbles are put into groups of 5. How many groups are there? Answer: 3 groups [2 marks] Explanation: 15 marbles grouped into sets of 5 means 15 ÷ 5 = 3. There are 3 groups. The student can draw 15 marbles and circle groups of 5. Marking note: Award 1 mark for correct method and 1 mark for correct answer.

15. 6 ÷ 2 = ________ Answer: 3 [1 mark] Explanation: 6 divided into 2 equal groups means 6 ÷ 2 = 3. Each group has 3. Marking note: Award 1 mark for correct answer.

16. 9 apples are shared equally among 3 baskets. How many apples are in each basket? Answer: 3 apples [1 mark] Explanation: 9 apples shared among 3 baskets means 9 ÷ 3 = 3. Each basket has 3 apples. Marking note: Award 1 mark for correct answer.

17. 20 pencils are put into 4 boxes. Each box has the same number of pencils. How many pencils are in each box? Answer: 5 pencils [2 marks] Explanation: 20 pencils shared equally into 4 boxes means 20 ÷ 4 = 5. Each box has 5 pencils. Marking note: Award 1 mark for correct method and 1 mark for correct answer.

18. 14 ÷ 2 = ________ Answer: 7 [1 mark] Explanation: 14 divided into 2 equal groups means 14 ÷ 2 = 7. Each group has 7. Marking note: Award 1 mark for correct answer.

19. 8 children sit at 2 tables. Each table has the same number of children. How many children are at each table? Answer: 4 children [1 mark] Explanation: 8 children shared equally at 2 tables means 8 ÷ 2 = 4. Each table has 4 children. Marking note: Award 1 mark for correct answer.

20. 18 ÷ 3 = ________ Answer: 6 [1 mark] Explanation: 18 divided into 3 equal groups means 18 ÷ 3 = 6. Each group has 6. Marking note: Award 1 mark for correct answer.

Common Mistakes to Watch For:

• Confusing the order in multiplication (e.g., writing 4 × 2 as 2 × 4 is acceptable at P1, but ensure the student understands the meaning).
• In division, students may add instead of divide. Remind them that sharing means dividing into equal groups.
• For repeated addition, students may miscount. Encourage drawing or using counters.
• For missing number questions, students may guess. Teach them to think: "2 groups of what makes 8?"

Marking Summary:

• Questions 1, 2(a), 2(b), 4, 5, 7, 8, 10, 12, 13, 15, 16, 18, 19, 20: 1 mark each (15 marks)
• Questions 3, 6, 9, 11, 14, 17: 2 marks each (12 marks)
• Total: 27 marks, but quiz is scored out of 20. Scale proportionally or use the first 20 marks as the score.