Fractions, Decimals, Percents

Fractions to Percents

100

Fractions to Percents 

1/4

25%

200

Fractions to Percents 

4/5

80%

300

Fractions to Percents  

18/25

72%

400

Fractions to Percents 

1/8

12.5%

500

Fractions to Percents 

1/16

6.25%

Decimals to Percents

100

Decimal to Percent 

0.15

15%

200

Decimals to Percents 

0.49

49%

300

Decimals to Percents 

0.149

14.9%

400

Decimals to Percents 

0.625

62.5%

500

Decimals to Percents 

0.205

20.5%

Percents to Decimals

100

Percents to Decimals 

98%

0.98

200

Percents to Decimals 

46.7%

0.467

300

Percents to Decimals 

8%

0.08

400

Percents to Decimals 

1%

0.01

500

Percents to Decimals 

320%

3.2

Percent of a Number

100

30 % of 70

21

200

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

4 students

300

25% of 63

15.75

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

500

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

16.8

Scale Factors

100

  x/8  = 24/48

x=4

200

Define Enlargment

to increase in size by multiplying the scale factor

300

3/X = 39/65

x=5

400

8/12 = 72/X

x=108

500

6/X = 84/ 112

x=8