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Primary 1 Mathematics Addition Subtraction Quiz

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Questions

Primary 1 Mathematics Quiz - Addition Subtraction

Name: ___________________________
Class: Primary 1 _______
Date: _______________
Score: _______ / 20

Duration: 30 minutes
Total Marks: 20

Instructions:

Read each question carefully.
Write your answers in the spaces provided.
Show your working where needed.
Check your answers before handing in.

Section A: Basic Addition and Subtraction (Questions 1–8, 1 mark each)

1. $5 + 3 = \underline{\hspace{2cm}}$

2. $9 - 4 = \underline{\hspace{2cm}}$

3. $7 + 6 = \underline{\hspace{2cm}}$

4. $12 - 5 = \underline{\hspace{2cm}}$

5. $8 + 8 = \underline{\hspace{2cm}}$

6. $15 - 7 = \underline{\hspace{2cm}}$

7. $11 + 4 = \underline{\hspace{2cm}}$

8. $18 - 9 = \underline{\hspace{2cm}}$

Section B: Number Bonds and Missing Numbers (Questions 9–14, 1 mark each)

9. Complete the number bond:
$10 = 6 + \underline{\hspace{1.5cm}}$

10. Fill in the missing number:
$\underline{\hspace{1.5cm}} + 5 = 13$

11. Fill in the missing number:
$14 - \underline{\hspace{1.5cm}} = 9$

12. Which pair makes 12? Circle the correct answer.
A) $7 + 4$
B) $8 + 4$
C) $9 + 2$
D) $6 + 5$

13. Which subtraction gives 5? Circle the correct answer.
A) $12 - 6$
B) $11 - 5$
C) $10 - 5$
D) $9 - 3$

14. Complete the fact family for 8, 5, and 13:
$8 + 5 = \underline{\hspace{1.5cm}}$
$5 + 8 = \underline{\hspace{1.5cm}}$
$13 - 8 = \underline{\hspace{1.5cm}}$
$13 - 5 = \underline{\hspace{1.5cm}}$

Section C: Word Problems (Questions 15–18, 2 marks each)

15. Siti has 9 stickers. Her brother gives her 6 more stickers. How many stickers does Siti have now?

Working:
Answer: _______ stickers

16. There are 14 children on a bus. At the next stop, 5 children get off. How many children are left on the bus?

Working:
Answer: _______ children

17. Ahmad has 11 red marbles and 7 blue marbles. How many marbles does he have altogether?

Working:
Answer: _______ marbles

18. Mrs Tan baked 16 cookies. She gave 8 cookies to her neighbour. How many cookies does she have left?

Working:
Answer: _______ cookies

Section D: Two-Step Problems (Questions 19–20, 2 marks each)

19. Ken has 15 pencils. He gives 4 pencils to Ali and 3 pencils to Bala. How many pencils does Ken have left?

Working:
Answer: _______ pencils

20. There are 7 apples in a basket. Mother puts in 5 more apples. Then Father takes out 4 apples. How many apples are in the basket now?

Working:
Answer: _______ apples

End of Quiz

Answers

Primary 1 Mathematics Quiz - Addition Subtraction (Answer Key)

Total Marks: 20

Section A: Basic Addition and Subtraction (Questions 1–8, 1 mark each)

1. $5 + 3 = \mathbf{8}$
Method: Count on from 5: 6, 7, 8. Or recall number bond $5+3=8$ .

2. $9 - 4 = \mathbf{5}$
Method: Count back from 9: 8, 7, 6, 5. Or recall $9-4=5$ from number bond $4+5=9$ .

3. $7 + 6 = \mathbf{13}$
Method: Make 10: $7+3=10$ , then $10+3=13$ . Or count on from 7.

4. $12 - 5 = \mathbf{7}$
Method: Count back from 12: 11, 10, 9, 8, 7. Or split: $12-2=10$ , $10-3=7$ .

5. $8 + 8 = \mathbf{16}$
Method: Double 8. Or $8+2=10$ , $10+6=16$ .

6. $15 - 7 = \mathbf{8}$
Method: Count back from 15: 14, 13, 12, 11, 10, 9, 8. Or $15-5=10$ , $10-2=8$ .

7. $11 + 4 = \mathbf{15}$
Method: Count on from 11: 12, 13, 14, 15. Or $11+4=15$ directly.

8. $18 - 9 = \mathbf{9}$
Method: Half of 18. Or count back 9 from 18. Number bond: $9+9=18$ .

Section B: Number Bonds and Missing Numbers (Questions 9–14, 1 mark each)

9. $10 = 6 + \mathbf{4}$
Method: Number bond of 10. $6+4=10$ . Pairs that make 10: $(1,9), (2,8), (3,7), (4,6), (5,5)$ .

10. $\mathbf{8} + 5 = 13$
Method: Think: what plus 5 makes 13? Count on from 5: 6, 7, 8, 9, 10, 11, 12, 13 → 8 steps. Or $13-5=8$ .

11. $14 - \mathbf{5} = 9$
Method: Think: 14 minus what gives 9? Count back from 14 to 9: 13, 12, 11, 10, 9 → 5 steps. Or $14-9=5$ .

12. B) $8 + 4$
Check: A) $7+4=11$ ✗, B) $8+4=12$ ✓, C) $9+2=11$ ✗, D) $6+5=11$ ✗.

13. C) $10 - 5$
Check: A) $12-6=6$ ✗, B) $11-5=6$ ✗, C) $10-5=5$ ✓, D) $9-3=6$ ✗.

14. Fact family for 8, 5, 13:
$8 + 5 = \mathbf{13}$
$5 + 8 = \mathbf{13}$
$13 - 8 = \mathbf{5}$
$13 - 5 = \mathbf{8}$
Teaching note: A fact family uses the same three numbers to make two addition and two subtraction sentences. Addition is commutative ( $8+5=5+8$ ). Subtraction starts with the whole (13) and takes away a part.

Section C: Word Problems (Questions 15–18, 2 marks each)

15. Siti has 9 stickers. Her brother gives her 6 more stickers. How many stickers does Siti have now?

Working:
$9 + 6 = 15$
(Make 10: $9+1=10$ , $10+5=15$ )

Answer: $\mathbf{15}$ stickers
Marks: 1 mark for correct operation ( $+$ ), 1 mark for correct answer with unit.
Common mistake: Writing $9-6=3$ (misreading "gives her more" as take away).

16. There are 14 children on a bus. At the next stop, 5 children get off. How many children are left on the bus?

Working:
$14 - 5 = 9$
(Count back: 13, 12, 11, 10, 9)

Answer: $\mathbf{9}$ children
Marks: 1 mark for correct operation ( $-$ ), 1 mark for correct answer with unit.
Key phrase: "get off" means subtract.

17. Ahmad has 11 red marbles and 7 blue marbles. How many marbles does he have altogether?

Working:
$11 + 7 = 18$
( $11+7$ : count on from 11, or $11+9=20$ minus 2 = 18)

Answer: $\mathbf{18}$ marbles
Marks: 1 mark for correct operation ( $+$ ), 1 mark for correct answer with unit.
Key phrase: "altogether" means add the two groups.

18. Mrs Tan baked 16 cookies. She gave 8 cookies to her neighbour. How many cookies does she have left?

Working:
$16 - 8 = 8$
(Half of 16, or count back 8 from 16)

Answer: $\mathbf{8}$ cookies
Marks: 1 mark for correct operation ( $-$ ), 1 mark for correct answer with unit.
Key phrase: "gave ... left" means subtract.

Section D: Two-Step Problems (Questions 19–20, 2 marks each)

19. Ken has 15 pencils. He gives 4 pencils to Ali and 3 pencils to Bala. How many pencils does Ken have left?

Working:
Method 1 (two subtractions):
$15 - 4 = 11$
$11 - 3 = 8$

Method 2 (add first, then subtract):
$4 + 3 = 7$ (total given away)
$15 - 7 = 8$

Answer: $\mathbf{8}$ pencils
Marks: 1 mark for correct method (either approach), 1 mark for correct final answer with unit.
Teaching note: Both methods are valid. Method 2 is often faster.

20. There are 7 apples in a basket. Mother puts in 5 more apples. Then Father takes out 4 apples. How many apples are in the basket now?

Working:
Step 1: $7 + 5 = 12$ (after Mother puts in)
Step 2: $12 - 4 = 8$ (after Father takes out)

Answer: $\mathbf{8}$ apples
Marks: 1 mark for correct two-step working shown, 1 mark for correct final answer with unit.
Common mistake: Doing $7 - 4 = 3$ then $3 + 5 = 8$ (wrong order of events). The problem states Mother puts in first, then Father takes out.

End of Answer Key