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Year 3 - Maths

Addition by bridging through 10

Review strategies for adding and subtracting across 10

Unit Summary

In this unit pupils will be reviewing and securing previous knowledge of adding 3 addends, understanding they can be added in any order and combined in different ways to bridge through 10

Lesson Summary

You will learn to add two numbers by bridging through ten.

Key Notes

  • Partitioning addends supports bridging 10.
  • Pairs to 10 can be used to add two or more addends.

Vocabulary To Learn

  • bridge: Bridging is a mental strategy which uses addition or subtraction to cross a number boundary.
  • partition: Partition means splitting a number into parts.

Common Mistakes To Avoid

  • Pupils partition one of the addends incorrectly to help them bridge ten.

3 Quick Questions (With Answers)

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

Partitioning addends supports bridging 10. Pairs to 10 can be used to add two or more addends.

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

Bridging is a mental strategy which uses addition or subtraction to cross a number boundary. Use this word when showing your method, then check your final answer is reasonable.

3. Spot and fix this common maths mistake.

Mistake: Pupils partition one of the addends incorrectly to help them bridge ten. Correction: Pupils use number pairs that total ten to help them partition the addend. They consider what they have to add to make ten.

More Lessons In This Unit

Browse all guides in the Year 3 Maths guide library.