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Math Coach Amy
Amy Ferguson Moncure

7th Grade Math · Unit 5

Percent of
a Number

Find the part when you know the percent and the whole.

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Key Ideas Easy Medium Hard
What to Remember

Out of 100

Percent means out of 100.

The part equals the percent times the whole.

Benchmarks

50% is half, 25% is a quarter, 10% is one tenth, and 1% is one hundredth.

Level 1

Easy

50%, 25%, 10%, and 1%

Example
Find the percent of the number.
50% of 40

part = percent × whole

50% = 50100

50100 = 12

part = 12 × 40

part = 20

Answer: 20

1
Find the percent of the number.
50% of 18
Show Answer

part = percent × whole

50% = 50100

50100 = 12

part = 12 × 18

part = 9

Answer: 9

2
Find the percent of the number.
50% of 26
Show Answer

part = percent × whole

50% = 50100

50100 = 12

part = 12 × 26

part = 13

Answer: 13

3
Find the percent of the number.
25% of 20
Show Answer

part = percent × whole

25% = 25100

25100 = 14

part = 14 × 20

part = 5

Answer: 5

4
Find the percent of the number.
25% of 36
Show Answer

part = percent × whole

25% = 25100

25100 = 14

part = 14 × 36

part = 9

Answer: 9

5
Find the percent of the number.
25% of 80
Show Answer

part = percent × whole

25% = 25100

25100 = 14

part = 14 × 80

part = 20

Answer: 20

6
Find the percent of the number.
10% of 60
Show Answer

part = percent × whole

10% = 10100

10100 = 110

part = 110 × 60

part = 6

Answer: 6

7
Find the percent of the number.
10% of 130
Show Answer

part = percent × whole

10% = 10100

10100 = 110

part = 110 × 130

part = 13

Answer: 13

8
Find the percent of the number.
10% of 250
Show Answer

part = percent × whole

10% = 10100

10100 = 110

part = 110 × 250

part = 25

Answer: 25

9
Find the percent of the number.
1% of 300
Show Answer

part = percent × whole

1% = 1100

part = 1100 × 300

part = 3

Answer: 3

10
Find the percent of the number.
1% of 700
Show Answer

part = percent × whole

1% = 1100

part = 1100 × 700

part = 7

Answer: 7

Level 2

Medium

5%, 20%, 75%, 30%, and 40%

Example
Find the percent of the number.
20% of 45

part = percent × whole

20% = 20100

20100 = 15

part = 15 × 45

part = 9

Answer: 9

1
Find the percent of the number.
5% of 40
Show Answer

part = percent × whole

5% = 5100

5100 = 120

part = 120 × 40

part = 2

Answer: 2

2
Find the percent of the number.
5% of 80
Show Answer

part = percent × whole

5% = 5100

5100 = 120

part = 120 × 80

part = 4

Answer: 4

3
Find the percent of the number.
5% of 140
Show Answer

part = percent × whole

5% = 5100

5100 = 120

part = 120 × 140

part = 7

Answer: 7

4
Find the percent of the number.
20% of 35
Show Answer

part = percent × whole

20% = 20100

20100 = 15

part = 15 × 35

part = 7

Answer: 7

5
Find the percent of the number.
20% of 65
Show Answer

part = percent × whole

20% = 20100

20100 = 15

part = 15 × 65

part = 13

Answer: 13

6
Find the percent of the number.
75% of 16
Show Answer

part = percent × whole

75% = 75100

75100 = 34

part = 34 × 16

part = 12

Answer: 12

7
Find the percent of the number.
75% of 28
Show Answer

part = percent × whole

75% = 75100

75100 = 34

part = 34 × 28

part = 21

Answer: 21

8
Find the percent of the number.
30% of 50
Show Answer

part = percent × whole

30% = 30100

30100 = 310

part = 310 × 50

part = 15

Answer: 15

9
Find the percent of the number.
30% of 70
Show Answer

part = percent × whole

30% = 30100

30100 = 310

part = 310 × 70

part = 21

Answer: 21

10
Find the percent of the number.
40% of 25
Show Answer

part = percent × whole

40% = 40100

40100 = 25

part = 25 × 25

part = 10

Answer: 10

Level 3

Hard

8%, 12%, 15%, 16%, 35%, and 45%

Example
Find the percent of the number.
15% of 40

part = percent × whole

15% = 15100

15100 = 320

part = 320 × 40

part = 6

Answer: 6

1
Find the percent of the number.
8% of 25
Show Answer

part = percent × whole

8% = 8100

8100 = 225

part = 225 × 25

part = 2

Answer: 2

2
Find the percent of the number.
8% of 75
Show Answer

part = percent × whole

8% = 8100

8100 = 225

part = 225 × 75

part = 6

Answer: 6

3
Find the percent of the number.
12% of 50
Show Answer

part = percent × whole

12% = 12100

12100 = 325

part = 325 × 50

part = 6

Answer: 6

4
Find the percent of the number.
12% of 75
Show Answer

part = percent × whole

12% = 12100

12100 = 325

part = 325 × 75

part = 9

Answer: 9

5
Find the percent of the number.
15% of 60
Show Answer

part = percent × whole

15% = 15100

15100 = 320

part = 320 × 60

part = 9

Answer: 9

6
Find the percent of the number.
16% of 25
Show Answer

part = percent × whole

16% = 16100

16100 = 425

part = 425 × 25

part = 4

Answer: 4

7
Find the percent of the number.
16% of 50
Show Answer

part = percent × whole

16% = 16100

16100 = 425

part = 425 × 50

part = 8

Answer: 8

8
Find the percent of the number.
35% of 20
Show Answer

part = percent × whole

35% = 35100

35100 = 720

part = 720 × 20

part = 7

Answer: 7

9
Find the percent of the number.
35% of 40
Show Answer

part = percent × whole

35% = 35100

35100 = 720

part = 720 × 40

part = 14

Answer: 14

10
Find the percent of the number.
45% of 20
Show Answer

part = percent × whole

45% = 45100

45100 = 920

part = 920 × 20

part = 9

Answer: 9

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