Fractions to Percents
Decimals to Percents
Percents to Decimals
Percent of a Number
Scale Factors
100

Fractions to Percents 

1/4

25%

100

Decimal to Percent 

0.15

15%

100

Percents to Decimals 

98%

0.98

100

30 % of 70


21

100

  x/8  = 24/48


x=4

200

Fractions to Percents 

4/5

80%

200

Decimals to Percents 

0.49

49%

200

Percents to Decimals 

46.7%

0.467

200

5% of students have ipads. Out of 80 kids, how many has ipads? 

4 students

200

Define Enlargment

to increase in size by multiplying the scale factor

300

Fractions to Percents  

18/25

72%

300

Decimals to Percents 

0.149

14.9%

300

Percents to Decimals 

8%

0.08

300

25% of 63

15.75

300

3/X = 39/65

x=5

400

Fractions to Percents 

1/8

12.5%

400

Decimals to Percents 

0.625

62.5%

400

Percents to Decimals 

1%

0.01

400

62% of all car crashes are due to people being on their cell phones. Out of 90 crashes, how many would be phone related? 

Round

55 or 56

400

8/12 = 72/X

x=108

500

Fractions to Percents 

1/16

6.25%

500

Decimals to Percents 

0.205

20.5%

500

Percents to Decimals 

320%

3.2

500

For every 35 books, 12% are new. How many books are new out of the pile of 70 books? 

16.8

500

6/X = 84/ 112

x=8