Unit 3 Percents

Percent Proportion

100

Using percent proportion:

30 is what percent of 150?

What is 20%

200

Using percent proportion:

12% of 75 is what number?

What is 9?

300

Using percent proportion:

13 is 130% of what number?

What is 10?

400

Using percent proportion:

23% of 20 is what  number?

What is 4.6 or 

4 2/3 

500

Using percent proportion:

30 is what percent of 42?

What is 

71 3/7 %?

Solving Proportions

100

7/10=x/20

What is x=14?

200

25/x=15/12

What is x=20?

300

27/6=x/8

What is x=36?

400

5/6=3/x

What is 3.6 or 

3 3/5?

500

12/20=14/x

What is 

23.333333... or 23 1/3?

Converting Percents

100

Convert to a percent:  

17/20

What is 85%?

200

Convert to a fraction in lowest terms:  56%

What is 

14/25?

300

Convert to a decimal:  13.8%

What is 0.138?

400

Convert to a fraction in lowest terms:  234%

What is 

2 17/50?

500

Convert to a fraction in lowest terms:  22.2%

What is 

111/500?

Percent Mental Benchmarks

100

Using Mental Benchmarks:

Find 40% of 150

What is 60?

200

Using Mental Benchmarks:

Find 5% of 280

What is 14?

300

Using Mental Benchmarks:

Find 15% of 46

What is 6.9?

400

Use Mental Benchmarks:

The total cost of a $42.00 item with a 5% sales tax

What is $44.10?

500

Using Mental Benchmarks:

Final cost of an $87 item on sale for 

66 2/3% off

What is $29.00?

Potpourri

100

30% of ____ is 75

What is 250?

200

If Jim earns $21 for 3 hours of babysitting, what is his unit rate?

What is $7 per hour?

300

Courtney has 3 cats.  This is 15% of the pets in her home.  How many pets does she have?

What is 20 pets?

400

Duncan had 160 baseball cards.  He gave away 15% of them.  How many does he have left?

What is 136 cards?

500

Mindee went out for dinner.  The meal cost $35.40.  If she leaves a 20% tip, how much money will she give the waitress in all?

What is $42.48?