Explain how to multiply and divide a number by 10, 100 and 1,000

Maths

In this unit pupils will explain the effect of multiplying and dividing a number by 10, 100 and 1,000 and use their knowledge of multiplying decimal fractions by whole numbers to solve measures problems. In the future unit pupils will apply memorised unit conversions to convert between units of measure. They will solve measures problems involving different units including imperial units.

In the prior unit pupils calculated with decimal numbers using column addition and subtraction. In this unit pupils will explain the effect of multiplying and dividing a number by 10, 100 and 1,000 and use their knowledge of multiplying decimal fractions by whole numbers to solve measures problems.

Calculating with decimal fractions

When we multiply 0.95 by 100, what is the new value of the 9 digit?

Sofia buys an apple every day. If one apple costs £0.35, how much has she spent after 10 days?

Lucas’ mum has £5,042 and she gives one-hundredth of this to Lucas for his birthday. How much money does she give him?

Look at the Gattegno chart. Which number is being represented?

When a number is multiplied by one hundred, the digits are moved __________ place value places to the left.

Sofia is thinking of a number. Her number is ten times the size of 0.4  What is her number?

Lucas is thinking of a number. His number is one hundredth times the size of 8 What is his number?

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