Question

The Woodward family went to dinner. The cost of dinner is $60.00. They wanted to leave a 15% tip. How much did they leave?

Answer 1

they left $9
"Find 15% of 60"

15100×601

=9

While a calculator is obviously quick and easy, you can do it manually as follows:

15100 is the same fraction as 320

320×6031=9

OR you cancel differently:

15100×601 ←÷10

→153102×631 ←÷5,÷2

3×3=9

OR:

15100×601=900100=9