Question

.5 x 3.9? how do i get the answer? i know it is .45 but i dont know how to do that without a calculator..

Answer 1

multiplication keeps track of the number of spaces that occur after a decimal ...

Answer 2

so multiply these like normal; then move your decimal over a total of 2 places, since that is how many places we have accounted for in the problem

Answer 3

3.9 <-- +1 deci
.5 <-- +1 deci
----
195 ; now we move 2 decis

1.95should be it

Answer 4

ohh, i got the wrong answer then! thank you!

Answer 5

yep