Mathematics, 24.11.2020 06:50 sophie5064

Emma always learned that when you multiply by a power of ten, all you need to do is add a zero. She used that trick to solve the following problems: 345 x 10 = 3,450
4,789 x 100 = 478,900
5.6 x 10 = 5.60

Emma’s sister told her that her “trick” doesn’t work, and that 5.6 x 10 is NOT 5.60.
Which girl is correct? How do you know?

help meee plsss you smart people

Answers: 3

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Emma always learned that when you multiply by a power of ten, all you need to do is add a zero. She...