Question

Jamal has 159 feet of leather cord, and it takes 3 feet of leather cord to make a belt. Exactly how many belts can Jamal make?

Which technique is most helpful for solving the problem?

A.
Use a calculator to divide 3 by 159.

B.
Use paper and pencil to divide 3 by 159.

C.
Use estimation to divide 160 by 3.

D.
Use mental math to divide 159 by 3.

Answer 1

i think D.

Answer 2

first two are incorrect because you need to divide 159 by 3

Answer 3

And 160 / 3 would be a repeating decimal, so that's kinda counterproductive.
I agree with D.

Answer 4

as for third, I think it is easier to do D, than estimating 160/3

Answer 5

thanks!

Answer 6

np :)

Answer 7

the last one im posting now!