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OpenStudy (anonymous):
.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..
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OpenStudy (amistre64):
multiplication keeps track of the number of spaces that occur after a decimal ...
OpenStudy (amistre64):
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
OpenStudy (amistre64):
3.9 <-- +1 deci .5 <-- +1 deci ---- 195 ; now we move 2 decis 1.95should be it
OpenStudy (anonymous):
ohh, i got the wrong answer then! thank you!
OpenStudy (amistre64):
yep
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