# McGraw Hill Math Grade 8 Lesson 6.6 Answer Key Percents and Fractions

Practice the questions of McGraw Hill Math Grade 8 Answer Key PDF Lesson 6.6 Percents and Fractions to secure good marks & knowledge in the exams.

## McGraw-Hill Math Grade 8 Answer Key Lesson 6.6 Percents and Fractions

Exercises Calculate Using Multiplication

Question 1.
18 is ____ % of 60
30%,

Explanation:
18 is x% of 60,
18 = $$\frac{x}{100}$$ X 60
x = $$\frac{18 X 100}{60}$$
x = $$\frac{1800}{60}$$
x = 30

Question 2.
20% of 85 is ___________
17,

Explanation:
20% of 85 is,
$$\frac{20}{100}$$ X 85 = x
$$\frac{20 X 85}{100}$$ = x
$$\frac{1700}{100}$$ = x
x = 17

Question 3.
$$\frac{42}{70}$$ = ____ %
60%,

Explanation:
$$\frac{42}{70}$$ = x%
70x = 42
x = $$\frac{42}{70}$$
x = 0.6
Multiply with 100 to convert into percentage,
0.6 x 100 = 60%

Question 4.
30% of 90 is ___________
27,

Explanation:
30% of 90 is,
$$\frac{30}{100}$$ X 90 = x
$$\frac{30 X 90}{100}$$ = x
$$\frac{2700}{100}$$ = x
x = 27

Question 5.
$$\frac{16}{128}$$ = ____ %
12.5%,

Explanation:
$$\frac{16}{128}$$ = x%
128x = 16
x = $$\frac{16}{128}$$
x = 0.125
Multiply with 100 to convert into percentage,
0.125 x 100 = 12.5%

Question 6.
$$\frac{12}{48}$$ = ____ %
25%,

Explanation:
$$\frac{12}{48}$$ = x%
48x = 12
x = $$\frac{12}{48}$$
x = 0.25
Multiply with 100 to convert into percentage,
0.25 x 100 = 25%

Question 7.
15% of 60 is __________
9,

Explanation:
15% of 60 is,
$$\frac{15}{100}$$ X 60 = x
$$\frac{15 X 60}{100}$$ = x
$$\frac{900}{100}$$ = x
x = 9

Question 8.
$$\frac{24}{160}$$ = ____ %
15%,

Explanation:
$$\frac{24}{160}$$ = x%
160x = 24
x = $$\frac{24}{160}$$
x = 0.15
Multiply with 100 to convert into percentage,
0.15 x 100 = 15%

Question 9.
35% of 220 is ____
77,

Explanation:
35% of 220 is,
$$\frac{35}{100}$$ X 220 = x
$$\frac{35 X 220}{100}$$ = x
$$\frac{7700}{100}$$ = x
x = 77

Question 10.
1$$\frac{1}{5}$$ = ____ %
120%,

Explanation:
1$$\frac{1}{5}$$ = x%
$$\frac{6}{5}$$ = x%
5x = 6
x = $$\frac{6}{5}$$
x = 1.2
Multiply with 100 to convert into percentage,
1.2 x 100 = 120%

Question 11.
40% of 65 is ____
26%,

Explanation:
40% of 65 is,
$$\frac{40}{100}$$ X 65 = x
$$\frac{40 X 65}{100}$$ = x
$$\frac{2600}{100}$$ = x
x = 26

Question 12.
$$\frac{75}{250}$$ = ____ %
30%,

Explanation:
$$\frac{75}{250}$$ = x%
200x = 75
x = $$\frac{75}{250}$$
x = 0.3
Multiply with 100 to convert into percentage,
0.3 x 100 = 30%

Question 13.
$$\frac{3}{50}$$ = ____ %
6%,

Explanation:
$$\frac{3}{50}$$ = x%
50x = 3
x = $$\frac{3}{50}$$
x = 0.06
Multiply with 100 to convert into percentage,
0.06 x 100 = 6%

Question 14.
$$\frac{55}{1100}$$ = ____ %
5%,

Explanation:
$$\frac{55}{1100}$$ = x%
1100x = 55
x = $$\frac{55}{1100}$$
x = 0.05
Multiply with 100 to convert into percentage,
0.05 x 100 = 5%

Question 15.
65% of 40 is ____
$$\frac{65}{100}$$ X 40 = x
$$\frac{65 X 40}{100}$$ = x
$$\frac{2600}{100}$$ = x