Use known facts to find complements to 100 efficiently
Lesson 2 / 10
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Lesson outcome
I can use known facts to find complements to 100 efficiently.
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Number facts to 10 can be applied to multiples of 10
Using pairs to 10 and pairs to 100 we can find pairs to 100
If we have a pair to 10 then the tens have to total 90 for the whole to be 100
A number line can represent the complements to 100
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