Relating Fractions, Decimals, and Percents

Estimating and Calculating Percents

Multiplying to find percents

Drawing Circle Graphs

Dividing to find percents

Write these fraction as a percent:

1/4 ; 3/10

25% ; 30%

Find 10% of each number:

47

298

4.7

29.8

Find:

20% of 90

40% of 90

18

32

Draw a circle graph to represent favorite ice cream flavor among 20 year 7 students.

Flavor Students

Chocolate: 10

Vanilla 5

Strawberry 5

Brown: Chocolate

Blue: Vanilla

Green: Strawberry

Write these fractions as a percent:

7/5 ; 3/4

140% ; 75%

Estimate 49% of 350.

About 175.

Find:

5% of 1.0

30% of 1.0

0.05

0.30

If 50% of the students in Maple Bear prefer Math than other subjects, which angle the students that prefer Math will make in a circle graph?

180 degrees.

Write each fraction as a decimal and percent:

8/20

14/5

14/25

0.4 (40%)

2.8 (280%)

0.56 (56%)

Estimate 149% of 60

90.

Find 130% of $1.00

Find 150% of $1.50

$1.30

$2.25

If 1000 teenagers answered this survey. How many prefer Rock and roll (13%) ?

130 people prefer Rock and roll!

Write each number two other ways:

0.18

0.35

3/8

18% (18/100)

35% (35/100)

0.375 (37.5%)

A game costs $29.99. The sales tax is 15%. Estimate the cost of game.

About $34.50.

Calculate each percent of 52.3

2% 20% 200%

1.046 10.46 104.6

Suppose this patter is continued on a hundred chart. The numbers in each pattern are colored red. What percent of the numbers on the chart are red?

1, 3, 5, 7, ...

50% of the chart is colored red.

Edward estimates he has traveled approximately 80 km. The total length of Edward's trip is 430 km.

About what percent does Edward still have left to go?

About 80%

There is a squared table with side 50 cm. The book on this table is 10 cm long and 15 cm width.

What percent of the table is occupied with the book?

6 % of the table is occupied with the book.

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