We Are Learning To Add two single digits which total more than 10

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Presentation transcript:

We Are Learning To Add two single digits which total more than 10 Using a quick mental strategy.

Use what you know about number bonds to 10 The complement of 6 is … 4 The complement of 7 is…. 3 The complement of 8 is…. 2

Use what you know about number bonds to 10 The complement of 5 is … 5 The complement of 9 is…. 1 The complement of 2 is…. 8

Quick Match 5 1 8 2 3 6 4 7 5 9

So the answer must be one more than 10. Adding beyond 10 I know 7+3=10 7 + 4 =? 4 is one more than 3 The answer must be 11 ! So the answer must be one more than 10.

So the answer must be three more than 10. Adding beyond 10 I know 8+2=10 8 + 5 =? 5 is three more than 2 The answer must be 13 ! So the answer must be three more than 10.

So the answer must be six more than 10. Adding beyond 10 I know 9+1=10 9 + 7 =? 7 is six more than 1 The answer must be 16 ! So the answer must be six more than 10.

Talk Us Through 9+2 =

Talk Us Through 5+6 =

Talk Us Through 7+4 =

Talk Us Through 8+3 =

When might you use this strategy ?