Question

7 1/7 - 1 9/10 = ?

Answer 1

use benchmarks to estimate the difference

Answer 2

I do not know exactly what using benchmarks means, but if I had to estimate this difference I would say that 7 and 1/7th is pretty close to 7, and 1 and 9/10 is reeeeally close to 2, so the answer probably isn't too far off from 7-2.

Answer 3

ok

Answer 4

Here is a decent write up on using benchmarks as an estimating tool (it is for 3rd-5th grade, not sure if that applies to you but I don't mean to imply it is young for you since I do not know your grade)

http://www.carrollk12.org/Assets/file/ElemMath/Grade5/Unit1/LP.5.NF.2.EstimateBenchFractions.pdf

Answer 5

lol im in 7th grade but im not like most internet ppl so no im not offended...lol thanks