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