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How can you 2s fact and a 1s fact to find 3x8?

Anonymous

∙ 14y ago

Updated: 4/28/2022

3 = 1 + 2 and 8 = 2+2+2 so 3 X 8 = (1+2)(2+2+2)= (1)(2 + 2+ 2) + (2)(2 + 2 + 2)=

1 X 2 + 1 X 2 + 1 X 2 + 2 X 2 + 2 X 2 + 2 X 2 , so you know the

multiplication facts 1 X 2 = 2 and 2 X 2 = 4 and know to add, you can work the problem.

3 X 8 = 2 + 2 + 2 + 4 + 4 + 4 .

Wiki User

∙ 14y ago

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