Junior1965 Junior1965

12-01-2017
Mathematics

contestada

Can you use doubling for 7 times 3

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Student2332 Student2332

12-01-2017

What do you mean doubling? You can add 7+7+7 which equals 21.

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PrettyAwesomeSmart PrettyAwesomeSmart

12-01-2017

Well yea doubling is like getting the same number like 7×3 with equals 21
So you have to find the same number 21, but in a different way like this

7
7 7
+7 ×3
------ -----
21 21

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