You want to buy 8 books for $19.68 each, estimate the total cost show your work.

I did 19.68 x 8 and got 157.44

then rounded the answer and got 157 am I right?

Or

The second time I tried I estimated 19.68 and got 20
so then I did 20 x 8 and got 160
Is this right?

4 answers

Your second estimate is correct.

Your second answer is correct.

Thanks!

You're welcome.