Writing an expression

1. Which expression means 'subtract 4 from 9, then multiply by 3'?

• (9 - 4) × 3
• 9 - 4 × 3
• 9 - (4 × 3)
• 3 × 9 - 4

2. Which expression means 'a third of the sum of 7 and 8'?

• (7 + 8) ÷ 3
• 7 + 8 ÷ 3
• 3 ÷ (7 + 8)
• 7 + (8 ÷ 3)

3. Write the answer to 'double 6, then add 9'.

Answer:

4. Which expression means 'twice the difference between 10 and 4'?

• 2 × (10 - 4)
• 2 × 10 - 4
• 10 - 4 × 2
• (2 × 10) - 4

5. 'Add 5 to 3, then double' is written (3 + 5) × 2.

• True
• False

6. Work out 'the sum of 12 and 8, shared between 4'.

Answer:

7. Which expression means '7 more than the product of 3 and 4'?

• 3 × 4 + 7
• 3 × (4 + 7)
• (3 + 4) × 7
• 7 × 3 + 4

8. Work out 'subtract 6 from the product of 5 and 4'.

Answer:

9. Without working it out, is 4 × (25 + 13) bigger or smaller than 4 × 25?

• Bigger
• Smaller
• The same
• You cannot tell

10. 3 × (6 + 2) is three times as big as 6 + 2.

• True
• False