Describe how to use a tens fact to find the difference for 15-8

asked Jan 26, 2017 209k views

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4 votes

fiest do 15 with 5 is 20 so 8 - 5 = 3 so 20 and 3 is 23

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Because you need to subtract from 10, you need to do 10-8. Then you will add 5 since you took away 5 to subtract from 10.

Gambisk answered Jan 30, 2017

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