Bell Work

Percent of a Number

Percent Estimation$3.25

30% of 40 = 1230% of 45 = 13.5

Percent Proportions

Percent Proportions

Percent Proportions

Percent Proportions (Finding a Percent)

Percent Proportions You Try (Finding a Percent)

20 = n 25 1002,000 = 25nn = 80%

$12.75 = x $50

100

1,275 = 50xx = 25.5%

Percent Proportions (Finding a Part)

Bell Work

Percent of a Number

Percent Estimation$3.25

30% of 40 = 1230% of 45 = 13.5

Percent Proportions You Try (Finding a Part)

n = 5 60 100300 = 100nn = 3

p = 12 85 1001020 = 100pp = 10.2

Percent Proportions (Finding a Whole)

Percent Proportions You Try (Finding a Whole)

26 = 40 x 1002600 = 40xx = 65

80 = 75 x 1008000 = 75xx = 106.7

Real World Example

200 = x_ 550 10020,000 = 550xx = 36.36%x = 36%

Percents Review

Percent of a Number

For the first six questions, find the number. Round the answer to the nearest tenth

if necessary.

Percent of a Number

8% of 50

4

Percent of a Number

95% of 40

38

Percent of a Number

42% of 263

110.5

Percent of a Number

110% of 70

77

Percent of a Number

115% of 20

23

Percent of a Number

130% of 78

101.4

Percent Estimation

For the next four questions, use estimation, rather than finding the exact number.

Remember, make any numbers that aren’t easy to

work with a little easier.

Percent Estimation

47% of 70

.45 x 70 = 31.5

Percent Estimation

39% of 120

.40 x 120 = 48

Percent Estimation

21% of 90

.20 x 90 = 18

Percent Estimation

76% of 180

.75 x 180 = 135

Percent Proportion

36% 10%

0.7 45

75 68.5

13 cups