Decimals

Making decimal calculations easier

Name: ______________________________Date: ______________Score: ______ / 20

1.
Use place value to work out 0.07 × 5900
2.
Work out 22.16 ÷ 40 by first dividing top and bottom by 10.
3.
What is 7.6 × 10?
4.
Which calculation is the same as 3.4 × 9?
1. A3.4 × 10 − 3.4
2. B3.4 × 10 + 3.4
3. C3.4 × 10 ÷ 3.4
5.
A shop sells 9 items at £8.2 each. Use the × (10 − 1) trick to find the total.
£
6.
Work out 4.7 × 9 by using × (10 − 1).
7.
Work out 9.12 ÷ 40 by first dividing top and bottom by 10.
8.
5.3 × 10 = 53. Now subtract 5.3 to find 5.3 × 9.
9.
0.02 × 8600 gives the same answer as 2 × 86.
True False
10.
Work out 0.472 ÷ 4
11.
Work out 3.5 × 11 by using × (10 + 1).
12.
Rewrite 0.06 as a whole number divided by 100. What is the whole number?
13.
Which is easier for working out 11.88 ÷ 40?
1. Adivide by 40 directly using short division
2. Bmultiply by 40 instead
3. Cdivide top and bottom by 10, then divide by 4
14.
A shop sells 9 items at £6 each. Use the × (10 − 1) trick to find the total.
£
15.
Use place value to work out 0.04 × 6400
16.
Work out 31.64 ÷ 40 by first dividing top and bottom by 10.
17.
What is 5.2 × 10?
18.
Which calculation is the same as 9.1 × 9?
1. A9.1 × 10 − 9.1
2. B9.1 × 10 + 9.1
3. C9.1 × 10 ÷ 9.1
19.
A shop sells 9 items at £5.9 each. Use the × (10 − 1) trick to find the total.
£
20.
Work out 3.4 × 9 by using × (10 − 1).

Answer key

Decimals — Making decimal calculations easier