**Name__________________________________________Date___________________________
Mathematics Problem Solving
Volume 3, Number 29, April 27, 1998
www.rhlschool.com**

Percentages

A** percentage**
can easily be converted to a **decimal**. Just move the
decimal place two places to the left. (When you don’t see a
decimal point, there really is one at the far right of the number.)

Example:

25 = 25.

25% = 25.%

25% = .25, or twenty-five hundredths.

25% of a number is the same as .25 times that number.

For example, 25% of 36 is .25 X 36!

**---****3 6
x .2 5
/1 8 0
/7
2 0
/9.0 0 = 9**

Twenty-five percent of thirty-six is nine. Nine is twenty-five percent of thirty-six.

Examples:

42% of 100 is the same as .42 times 100.

42% of 100 = 42 because .42 X 100 = 42.

15% of 620 = 93 because .15 X 620 = 93.

Fifteen percent of six hundred twenty is
ninety-three.

Ninety-three is fifteen percent of six
hundred twenty.

3% of any number is .03 times that number.

8% of 200 is the same as .08 X
200. .08 X 200 = 16

Eight percent of two hundred equals sixteen.

1. Scott invited 300 kids to his birthday party. Only 19% of the kids showed up. How many kids came to the party?

2. Amy bought a notebook for $ 1.50 plus 6% sales tax. How much did she pay?

3. Ryan bought a twelve dollar flashlight that was on sale for 20% off the regular price. He handed the cashier a ten dollar bill. She gave him the correct change. How much change did he get? (Assume no sales tax.)

4. Store A has a big sale.
Everything in the store is marked down, 40% off the list price. At the
checkout counter, you get an additional 10% off the discounted price.

./.Store B
has a big sale too. Everything is marked down 47% off the list price.

...Assuming that
the merchandise and list prices are the same in both stores, which
store has the better sale?

Copyright 1998 RHL

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