Transcript
Page 1: Addition and Subtraction

Addition and Subtraction

Page 2: Addition and Subtraction

What words do you relate to this symbol?

Page 3: Addition and Subtraction

What words do you relate to this symbol?

Page 4: Addition and Subtraction

The Importance of Language

• Children need to understand a wide variety of words that relate to Addition and subtraction that will support them in answering the following:

• Word problems• Mental maths• Real life problems and experiences.

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What to look forNumber bondsChildren need to have secure knowledge of number bonds especially number bonds to 10! This will support their familiarity of number bonds to 20 and 100.8+2+16+4=30 79+21=100 10 20 90 10

Doubles 8+14+8+13 16

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What to look for

Larger number on top

Carry overs at the top

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Inverse Operations Addition and subtraction are inverse operations of each other. Children should use the opposite operation to check their answer is correct.

e.g. 45+12= 57 57-12=45

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Things to Remember:

• Organisation of work: aligning numbers

• Larger number on top

• Carry over’s:*At the top for subtraction *At the bottom for addition

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Any Questions?

Page 10: Addition and Subtraction

Have a go!

52 44 623 +39 +29 +328

Page 11: Addition and Subtraction

Have a go!

52 74 617-36 -58 -365


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