### Home > CCAA > Chapter 8 Unit 7 > Lesson CC2: 8.2.2 > Problem8-50

8-50.

Autumn and her friends had dinner at their favorite restaurant, and the bill came to $\60$. They decided to leave $18\%$ of the bill for a tip. Without using a calculator, help them compute how much money is $18\%$ of the bill.

$10\%$ of $\60$ is $\6$.
$5\%$ of $\60$ is $\3$.
$1\%$ of $\60$ is $\0.60$.
Can you combine these to find $18\%$ of $\60$?
Can you find more than one way?

You can see $18\%$ as $10\%+5\%+3(1\%)$ or as $2(10\%)-2(1\%)$.