Multiplying by 101 or 99 in your head. Sounds difficult, but you can do it by multiplying by 100 and then adjusting.

Multiply a decimal fraction by 10 or 100: remember to move the digits one place to the left or two places to the left.

Using knowledge of place value and times tables to multiply by 10, 20, 50, 100 and 1000.

Use knowledge of place value to multiply and divide by 10, 100 and 1,000.