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Year 4 - Maths

Use different strategies to subtract multiples of 100

Secure place value to 1000: apply to addition and subtraction: multiples of 100

Unit Summary

In this unit pupils will explain how many tens, hundreds and ones 1,000 is composed of. They will use different strategies to add and subtract multiples of 100.

Lesson Summary

You will learn to use different strategies to subtract multiples of 100.

Key Notes

  • Known facts help us to subtract multiples of 100
  • If 5 subtract 3 is equal to 2 then 5 hundred subtract 3 hundred is equal to 2 hundred.
  • Subtracting multiples of 100 can be represented in different ways.

Vocabulary To Learn

  • Multiple: A multiple is the result of multiplying a number by another whole number.

Common Mistakes To Avoid

  • Pupils may not see the connection between known facts and calculating using multiples of one hundred.

3 Quick Questions (With Answers)

1. Solve this in steps: explain the method from this lesson and why each step matters.

Known facts help us to subtract multiples of 100. If 5 subtract 3 is equal to 2 then 5 hundred subtract 3 hundred is equal to 2 hundred.

2. Use this key word in a maths sentence and explain it clearly. 'Multiple'

A multiple is the result of multiplying a number by another whole number. Use this word when showing your method, then check your final answer is reasonable.

3. Spot and fix this common maths mistake.

Mistake: Pupils may not see the connection between known facts and calculating using multiples of one hundred. Correction: Place value counters or Base 10 blocks may be helpful with getting children to unitise and see the connection between, for example, 14 − 7 and 1,400 − 700.

More Lessons In This Unit

Browse all guides in the Year 4 Maths guide library.