URGENT: Grade 8 Math
posted by Molly on .
In my math question it says:
Multiply. Simplify before multiplying. Use benchmarks to estimate to check the product is resonable.
a)3/4 x 8/5
is one of the equations
What are benchmarks?

3/4 x 8/5
Let's estimate that since 8/5 is more than 1 that your answer is probably just over 1.
First cancel to simplify:
3/1 * 2/5 = 6/5 = 1 1/5 
3/4 x 8/5 = 24/20 = 12/10 = 6/5
You will need to supply your own benchmarks. I don't know how your teacher is using them. 
im pretty sure that a bench mark is an estimate and to do this u muliply top and that's ur top nuber and multiply the bottom and that's ur bottom number I think sorry if im wrong