lovelyone lovelyone

21-09-2014
Mathematics

Answered

record the product. use expanded form to help.

4x21=

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21-09-2014

8.4 * 10^1 is what I think the answer is

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StanleyTB StanleyTB

21-09-2014

to use it in expanded form
(4×20)+(4×1)=84

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