Multiply and divide numbers by 10 and 100 (5)

Description

Pupils should be able to:

• use and understand the language of 10 or 100 times the size to describe multiplication of numbers, including decimal fractions, by 10 or 100
• understand division as the inverse action
• use and understand the language of one-tenth or one-hundredth times the size to describe division of numbers by 10 or 100, including to calculations that give decimal fraction quotients.

Language focus

“8, made one-tenth of the size, is 0.8.”

“8 divided by 10 is equal to 0.8.”

“First we had 8 ones. Now we have 8 tenths.”

“0.8, made 10 times the size, is 8.”

“0.8 multiplied by 10 is equal to 8.”

“First we had 8 tenths. Now we have 8 ones.”