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Primary 1 Mathematics Addition Subtraction Quiz

Free P1 Maths Addition Subtraction quiz, Kimi2.6 AI version, with questions, answers, and syllabus-aligned practice for Singapore students.

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Questions

Primary 1 Mathematics Quiz - Addition Subtraction

Name: _________________________________

Class: ______________ Date: ______________

Duration: 30 minutes

Total Marks: 30 marks

Instructions: Answer all questions. Write your answers in the spaces provided. Show your working where asked.

Section A: Simple Addition and Subtraction (Questions 1–10)

[10 marks]

1. $3 + 4 =$ _______

[1 mark]

2. $9 - 5 =$ _______

[1 mark]

3. $6 + 7 =$ _______

[1 mark]

4. $12 - 8 =$ _______

[1 mark]

5. $15 + 4 =$ _______

[1 mark]

6. $20 - 6 =$ _______

[1 mark]

7. $8 + 9 =$ _______

[1 mark]

8. $17 - 9 =$ _______

[1 mark]

9. $23 + 5 =$ _______

[1 mark]

10. $31 - 7 =$ _______

[1 mark]

Section B: Number Bonds and Making Tens (Questions 11–15)

[10 marks]

11. Fill in the missing number: $8 +$ _______ $= 10$

[1 mark]

12. Fill in the missing number: _______ $+ 6 = 15$

[1 mark]

13. Fill in the missing number: $14 -$ _______ $= 6$

[1 mark]

14. Fill in the missing number: _______ $- 9 = 7$

[1 mark]

15.

Diagram for Q15 (P1 Maths)

Generated diagram for Q15.

Use the number bond above. Write the missing number.

_______ $= 17 - 9$

[2 marks]

16.

Diagram for Q16 (P1 Maths)

Generated diagram for Q16.

How many stars are there altogether?

_______ $+$ _______ $=$ _______

There are _______ stars altogether.

[2 marks]

17.

Diagram for Q17 (P1 Maths)

Generated diagram for Q17.

Look at the 10-frame above.

(a) How many boxes are filled? _______

(b) How many boxes are empty? _______

(c) Write an addition sentence: _______ $+$ _______ $= 10$

[2 marks]

Section C: Word Problems (Questions 18–20)

[10 marks]

18. Mei Ling has 14 stickers. She gives away 6 stickers to her brother. How many stickers does Mei Ling have left?

Show your working:

Mei Ling has _______ stickers left.

[3 marks]

19. There are 8 red balloons and 9 blue balloons at a party. How many balloons are there altogether?

Show your working:

There are _______ balloons altogether.

[3 marks]

20. Raju has 25 marbles. Kai Wen has 17 marbles. How many more marbles does Raju have than Kai Wen?

Show your working:

Raju has _______ more marbles than Kai Wen.

[4 marks]

End of Quiz

Answers

Primary 1 Mathematics Quiz - Addition Subtraction: Answer Key

Total Marks: 30 marks

Section A: Simple Addition and Subtraction

[10 marks total]

1. $3 + 4 =$ 7

[1 mark]

Explanation: Start with 3, then count on 4 more: 4, 5, 6, 7. Or use your fingers: hold up 3 fingers, then hold up 4 more, count all fingers showing.

2. $9 - 5 =$ 4

[1 mark]

Explanation: Start with 9, count backwards 5: 8, 7, 6, 5, 4. Or think: "What number plus 5 makes 9?" Since $4 + 5 = 9$ , then $9 - 5 = 4$ .

3. $6 + 7 =$ 13

[1 mark]

Explanation: Use the "make 10" strategy. $6 + 7$ can be split as $6 + 4 + 3 = 10 + 3 = 13$ . Or count on 7 from 6: 7, 8, 9, 10, 11, 12, 13.

4. $12 - 8 =$ 4

[1 mark]

Explanation: Start with 12, count backwards 8: 11, 10, 9, 8, 7, 6, 5, 4. Or use number bonds: since $8 + 4 = 12$ , then $12 - 8 = 4$ .

5. $15 + 4 =$ 19

[1 mark]

Explanation: Add the ones: 5 ones + 4 ones = 9 ones. The tens stay the same: 1 ten. So $15 + 4 = 19$ .

6. $20 - 6 =$ 14

[1 mark]

Explanation: Start with 20, count backwards 6: 19, 18, 17, 16, 15, 14. Or break it down: $20 - 10 = 10$ , but that's too much, so $20 - 6 = 14$ .

7. $8 + 9 =$ 17

[1 mark]

Explanation: Use "make 10" strategy. $8 + 9 = 8 + 2 + 7 = 10 + 7 = 17$ . Or $9 + 9 = 18$ , so $8 + 9 = 17$ (one less).

8. $17 - 9 =$ 8

[1 mark]

Explanation: Use "make 10" strategy for subtraction. $17 - 9 = 17 - 7 - 2 = 10 - 2 = 8$ . Or think: $9 + 8 = 17$ , so $17 - 9 = 8$ .

9. $23 + 5 =$ 28

[1 mark]

Explanation: Add the ones: 3 ones + 5 ones = 8 ones. The tens stay the same: 2 tens. So $23 + 5 = 28$ .

10. $31 - 7 =$ 24

[1 mark]

Explanation: Break 31 into 20 and 11. Then $11 - 7 = 4$ , and $20 + 4 = 24$ . Or count backwards from 31: 30, 29, 28, 27, 26, 25, 24 (7 steps).

Section B: Number Bonds and Making Tens

[10 marks total]

11. $8 +$ 2 $= 10$

[1 mark]

Explanation: Number bonds of 10: two numbers that add up to 10. Think "What goes with 8 to make 10?" Count on from 8: 9, 10. That's 2 more. So $8 + 2 = 10$ .

12. 9 $+ 6 = 15$

[1 mark]

Explanation: Think "What number plus 6 equals 15?" or reverse the addition: $15 - 6 = 9$ . Check: $9 + 6 = 15$ ✓

13. $14 -$ 8 $= 6$

[1 mark]

Explanation: Think "What number taken away from 14 leaves 6?" or "What plus 6 equals 14?" Since $8 + 6 = 14$ , then $14 - 8 = 6$ .

14. 16 $- 9 = 7$

[1 mark]

Explanation: Reverse the subtraction: what number minus 9 equals 7? This means $? = 7 + 9 = 16$ . Check: $16 - 9 = 7$ ✓

15. The missing number is 8

$\boxed{8} = 17 - 9$

[2 marks]

Explanation: In a number bond, the top number (whole) equals the sum of the two bottom numbers (parts). So part = whole − other part.

Step 1: Identify the whole (17) and one part (9) Step 2: Missing part = $17 - 9$ Step 3: $17 - 9 = 8$ (using make 10: $17 - 7 = 10$ , then $10 - 2 = 8$ )

Common mistake: Writing 8 in the circle but not showing understanding of the number bond relationship.

Marking: 1 mark for correct answer, 1 mark for showing number bond understanding

16. 7 $+$ 5 $=$ 12

There are 12 stars altogether.

[2 marks]

Explanation: Count the stars in each group from the image. First group has 7 stars, second group has 5 stars. "Altogether" means we add.

Step 1: Count stars in first group = 7 Step 2: Count stars in second group = 5 Step 3: Add: $7 + 5 = 12$

Use "make 10": $7 + 5 = 7 + 3 + 2 = 10 + 2 = 12$

17.

(a) 7 boxes are filled

(b) 3 boxes are empty

(c) 7 $+$ 3 $= 10$ (or $3 + 7 = 10$ )

[2 marks]

Explanation: A 10-frame always has 10 boxes total. Count the filled (shaded) boxes: 7. The empty boxes are the rest: $10 - 7 = 3$ . The addition sentence shows both parts make the whole: $7 + 3 = 10$ .

Section C: Word Problems

[10 marks total]

18. Mei Ling has 8 stickers left.

[3 marks]

Working: $14 - 6 = 8$

Step-by-step explanation:

Step 1: Understand the problem. Mei Ling starts with 14 stickers. "Gives away" means we subtract — she has fewer stickers now.

Step 2: Identify the numbers. Start: 14 stickers. Given away: 6 stickers.

Step 3: Choose the operation. "Gives away" → subtraction.

Step 4: Calculate: $14 - 6 = 8$

Method: Make 10: $14 - 4 = 10$ , then $10 - 2 = 8$ . So $14 - 6 = 8$ .

Step 5: Answer the question. Mei Ling has 8 stickers left.

Marking breakdown:

1 mark: Correct operation identified (subtraction) or correct setup
1 mark: Correct working shown
1 mark: Correct final answer with units

Common mistake: Adding instead of subtracting ( $14 + 6 = 20$ ). Watch for "gives away," "left," "remaining" — these mean subtraction.

19. There are 17 balloons altogether.

[3 marks]

Working: $8 + 9 = 17$

Step-by-step explanation:

Step 1: Understand the problem. We have two groups of balloons. "Altogether" means we need to find the total — we add.

Step 2: Identify the numbers. Red balloons: 8. Blue balloons: 9.

Step 3: Choose the operation. "Altogether" → addition.

Step 4: Calculate: $8 + 9 = 17$

Method: Make 10: $8 + 9 = 8 + 2 + 7 = 10 + 7 = 17$ . Or $9 + 9 = 18$ , so $8 + 9 = 17$ .

Step 5: Answer the question. There are 17 balloons altogether.

Marking breakdown:

1 mark: Correct operation identified (addition) or correct setup
1 mark: Correct working shown
1 mark: Correct final answer with units

Common mistake: Subtracting instead of adding. Watch for "altogether," "total," "in all" — these mean addition.

20. Raju has 8 more marbles than Kai Wen.

[4 marks]

Working: $25 - 17 = 8$

Or: $25 - 15 = 10$ $10 - 2 = 8$

Step-by-step explanation:

Step 1: Understand the problem. We need to compare two amounts. "How many more" means we find the difference — we subtract the smaller number from the larger number.

Step 2: Identify the numbers. Raju: 25 marbles (more). Kai Wen: 17 marbles (fewer).

Step 3: Choose the operation. "How many more" → subtraction (larger − smaller).

Step 4: Calculate: $25 - 17$

Method: Break it down. $25 - 10 = 15$ , then $15 - 7 = 8$ . Or: $25 - 17 = 25 - 15 - 2 = 10 - 2 = 8$ . Or: add up from 17: $17 + 3 = 20$ , $20 + 5 = 25$ , so $3 + 5 = 8$ .

Step 5: Answer the question. Raju has 8 more marbles than Kai Wen.

Marking breakdown:

1 mark: Correct understanding (find the difference / "how many more")
1 mark: Correct numbers chosen (25 − 17, not 25 + 17)
1 mark: Correct working with valid method shown
1 mark: Correct final answer with correct wording ("more marbles")

Common mistakes:

Adding instead: $25 + 17 = 42$ — this would be the total if they combined marbles
Getting confused with "more than" wording — remember "how many more" always means subtraction of the two numbers

End of Answer Key

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