Maths - Addition and Subtraction
21 free practice questions with explanations
PassNova has 21 free KS1 SATs practice questions on Maths - Addition and Subtraction, each with a clear explanation. Practise them in the browser with instant feedback — 100% free, no sign-up, on any device. Updated for 2026.
Maths - Addition and Subtraction: example questions & answers
21 worked examples with answers and explanations below. Practise them in the browser with instant feedback on every answer.
2 + 3 = ?
- A1
- B4
- C5✓
- D6
Answer: 2 apples and 3 apples make 5 apples. 2 + 3 = 5.
5 + 2 = ?
- A8
- B6
- C7✓
- D3
Answer: Start at 5 and count on 2 more: 5, 6, 7. So 5 + 2 = 7.
4 + 4 = ?
- A7
- B4
- C6
- D8✓
Answer: 4 and 4 is the same as two groups of 4. That makes 8.
6 - 2 = ?
- A4✓
- B8
- C3
- D5
Answer: If we take away 2 from 6, we have 4 left. 6 - 2 = 4.
10 - 3 = ?
- A8
- B7✓
- C13
- D6
Answer: Start at 10 and count back 3: 10, 9, 8, 7. So 10 - 3 = 7.
7 + 3 = ?
- A9
- B10✓
- C4
- D11
Answer: 7 + 3: Start at 7, count on 3 more: 7, 8, 9, 10. So 7 + 3 = 10.
5 + 5 = ?
- A10✓
- B9
- C8
- D11
Answer: Two groups of 5 make 10. This is an important number to remember!
8 - 4 = ?
- A3
- B4✓
- C5
- D12
Answer: If we take away 4 from 8, we have 4 left. 8 - 4 = 4.
3 + 4 + 2 = ?
- A8
- B9✓
- C7
- D10
Answer: 3 + 4 = 7, then 7 + 2 = 9. So 3 + 4 + 2 = 9.
12 + 5 = ?
- A17✓
- B15
- C16
- D20
Answer: Start at 12, count on 5: 12, 13, 14, 15, 16, 17. So 12 + 5 = 17.
15 - 5 = ?
- A20
- B10✓
- C5
- D8
Answer: Start at 15, count back 5: 15, 14, 13, 12, 11, 10. So 15 - 5 = 10.
? + 3 = 10
- A5
- B6
- C7✓
- D8
Answer: We need to find the missing number. 7 + 3 = 10. So the answer is 7.
9 - ? = 4
- A5✓
- B13
- C4
- D6
Answer: We need a number that when we take it from 9, we get 4. 9 - 5 = 4.
20 + 10 = ?
- A40
- B30✓
- C10
- D25
Answer: 2 tens and 1 ten make 3 tens. That is 30.
25 - 10 = ?
- A35
- B10
- C15✓
- D20
Answer: If we take away 1 ten from 2 tens and 5 ones, we have 1 ten and 5 ones left. That is 15.
6 + 4 = ?
- A12
- B2
- C10✓
- D8
Answer: 6 + 4 makes another group of 10. 6 + 4 = 10.
11 + 2 = ?
- A13✓
- B15
- C10
- D9
Answer: Start at 11, count on 2: 11, 12, 13. So 11 + 2 = 13.
14 - 4 = ?
- A12
- B18
- C10✓
- D8
Answer: If we take away 4 from 14, we have 10 left. 14 - 4 = 10.
8 + 8 = ?
- A14
- B17
- C15
- D16✓
Answer: Two groups of 8 make 16. 8 + 8 = 16.
20 - 8 = ?
- A28
- B15
- C12✓
- D10
Answer: Start at 20, count back 8: 20, 19, 18, 17, 16, 15, 14, 13, 12. So 20 - 8 = 12.
Ella buys a pencil for 30p. She pays with a 50p coin. How much change does she get?
- A10p
- B30p
- C80p
- D20p✓
Answer: Change is what is left over, so take away: 50p - 30p = 20p. Adding the two amounts instead would give 80p.