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

Her sis is right

Step-by-step explanation:

She is correct because if you multiply a decimal by a power of 10 instead of adding a zero you bring numbers out of the decimal state.

0.0076, if you meant 4.125 divided by 0.03125 it would be 132

step-by-step explanation:

first you have to move the decimal in 0.03125 over until its behind the 5 which is 5 places over. now the number is 3125

then you have to move the decimal in 4.125, 5 places over. now the number is 4,112,500.

now you divide like you would normally would and get 0.0076