KS2 Primary Maths Age 13-17 - Calculations: Multiplying and Dividing with Decimals - Explained

The video tutorial explains how to multiply decimals by 10 and 100. When multiplying by 10, move all digits one place to the left. For multiplying by 100, move digits two places to the left. A shortcut for multiplying by 10 is to move the decimal point one place to the right. The final answer given is 253.4, with one mark awarded for this correct answer.

What happens to the digits of a decimal number when it is multiplied by 10?

• They move two places to the left.

• They stay in the same place.

• They move one place to the left.

• They move one place to the right.

When multiplying a decimal by 100, how many places do the digits move?

• Three places to the left

• Two places to the left

• One place to the right

• Two places to the right

What is the shortcut for multiplying a decimal by 10?

• Move the decimal point one place to the right

• Move the decimal point one place to the left

• Move the decimal point two places to the right

• Move the decimal point two places to the left

What is the result of moving the decimal point one place to the right in the number 25.34?

• 25.34

• 2.534

• 253.4

• 2534

How many marks were awarded for the correct answer in the example given?

• No marks

• One mark

• Three marks

• Two marks