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Year 4 - Maths

Use different strategies to add 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 add multiples of 100.

Key Notes

  • Known facts help us to add multiples of 100
  • If 3 plus 2 is equal to 5 then 3 one-hundreds plus 2 one-hundreds is equal to 5 one-hundreds.
  • Adding 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 initially find it tricky to use known facts to add multiples of 100

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 add multiples of 100. If 3 plus 2 is equal to 5 then 3 one-hundreds plus 2 one-hundreds is equal to 5 one-hundreds.

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 initially find it tricky to use known facts to add multiples of 100. Correction: When explaining that we can use 3 ones + 6 ones = 9 ones to find 3 hundreds + 6 hundreds = ___, stress that the only thing that changes here is the noun.

More Lessons In This Unit

Browse all guides in the Year 4 Maths guide library.