why might you want to use the commutative property to change the order of the intergers in the following sum before adding? -80+(-173)+(-20)

hi,

3. 12.15, you are correct.

4.2.01, your first digit is correct,

hope this !

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents