Question

7. Estimate a 15% tip on a $42.65 check.

Answer 1

Convert the 15% top into a decimal. You move the decimal two places to the left so you would get .15
Now multiple the .15 by $42.65.
You should get around 6.3975.
When you round you should get $6.40.
So the tip on the $42.65 check is about $6.40.