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Adding 2-digit and one digit numbers crossing 10.

Today we used the number line to hop to the next ten and then count on the difference.  Have a go!

 

Adding 3-digit and one digit numbers crossing 10.

Using the format you prefer, number line, pictorial - show me how you work these out.  

 

Choose your level of challenge! 

Extension:  There is always a reasoning question.  Convince me how you know!


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