I went ahead and purchased MM when it was recently on sale. Dd is in the 5th grade book and I am starting to wonder if she needs a calculator.
Here was the problem:
Mary jogs 7/12 miles each day, five days a week. Calculate how many miles she jogs in a 52-week year.
Dd worked this problem by multiplying 5*7/12=35/12
then 52*35/12
then 1820/12
finally 151.6 miles in the year.
The solutions manual has it as
7/12 × 5 × 52 = 151 2/3 miles
I cannot figure out how MM works this problem. I see that the answers are very close, but I am struggling with explaining how this was worked to dd.
Thanks.