Seudónimo Seudónimo

06-12-2016
Mathematics

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

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RoyalWolfBoy RoyalWolfBoy

06-12-2016

well 15 minus 8 is 7 so the tens fact for example 8-3 is 5 just as 5+3 is 8 or like how 7+3 is 10 and 10-7=3 . that is the tens fact, so 15-8 is 7 and 7+8 is 15

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