# McGraw Hill Math Grade 8 Lesson 4.1 Answer Key Multiplying Fractions and Whole Numbers

Practice the questions of McGraw Hill Math Grade 8 Answer Key PDF Lesson 4.1 Multiplying Fractions and Whole Numbers to secure good marks & knowledge in the exams.

## McGraw-Hill Math Grade 8 Answer Key Lesson 4.1 Multiplying Fractions and Whole Numbers

Exercises Multiply

Question 1.
13 × $$\frac{1}{4}$$
$$\frac{13}{4}$$,

Explanation:
When 13 is multiplied by $$\frac{1}{4}$$ we get $$\frac{13 X 1}{4}$$ = $$\frac{13}{4}$$.

Question 2.
15 × $$\frac{2}{7}$$
$$\frac{30}{7}$$,

Explanation:
When 15 is multiplied by $$\frac{2}{7}$$ we get $$\frac{15 X 2}{7}$$ = $$\frac{15}{7}$$.

Question 3.
22 × $$\frac{3}{8}$$
$$\frac{33}{4}$$,

Explanation:
When 22 is multiplied by $$\frac{3}{8}$$ we get $$\frac{22 X 3}{8}$$ = $$\frac{33}{4}$$.

Question 4.
24 × $$\frac{3}{4}$$
$$\frac{72}{4}$$ = 18,

Explanation:
When 24 is multiplied by $$\frac{3}{4}$$ we get $$\frac{24 X 3}{4}$$ = $$\frac{72}{4}$$ = 18.

Question 5.
18 × $$\frac{7}{20}$$
$$\frac{63}{10}$$,

Explanation:
When 18 is multiplied by $$\frac{7}{20}$$ we get $$\frac{18 X 7}{20}$$ = $$\frac{63}{10}$$.

Question 6.
31 × $$\frac{2}{17}$$
$$\frac{62}{17}$$,

Explanation:
When 31 is multiplied by $$\frac{2}{17}$$ we get $$\frac{31 X 2}{17}$$ = $$\frac{62}{17}$$.

Question 7.
6 × $$\frac{7}{24}$$
$$\frac{7}{4}$$,

Explanation:
When 6 is multiplied by $$\frac{7}{24}$$ we get $$\frac{6 X 7}{24}$$ = $$\frac{7}{4}$$.

Question 8.
14 × $$\frac{10}{11}$$
$$\frac{140}{11}$$,
Explanation:
When 14 is multiplied by $$\frac{10}{11}$$ we get $$\frac{14 X 10}{11}$$ = $$\frac{140}{11}$$.

Question 9.
16 × $$\frac{5}{36}$$
$$\frac{20}{9}$$,

Explanation:
When 16 is multiplied by $$\frac{5}{36}$$ we get $$\frac{16 X 5}{36}$$ = $$\frac{20}{9}$$.

Question 10.
7 × $$\frac{2}{3}$$
$$\frac{14}{3}$$,

Explanation:
When 7 is multiplied by $$\frac{2}{3}$$ we get $$\frac{7 X 2}{3}$$ = $$\frac{14}{3}$$.

Question 11.
16 × $$\frac{3}{5}$$
$$\frac{48}{5}$$,

Explanation:
When 16 is multiplied by $$\frac{3}{5}$$ we get $$\frac{16 X 3}{5}$$ = $$\frac{48}{5}$$.

Question 12.
14 × $$\frac{11}{28}$$
$$\frac{11}{2}$$,

Explanation:
When 14 is multiplied by $$\frac{11}{28}$$ we get $$\frac{14 X 11}{28}$$ = $$\frac{154}{28}$$ both goes by 14 as $$\frac{14 X 1 X 11}{14 X 2}$$ = $$\frac{11}{2}$$.

Question 13.
44 × $$\frac{6}{7}$$
$$\frac{264}{7}$$,

Explanation:
When 44 is multiplied by $$\frac{6}{7}$$ we get $$\frac{44 X 6}{7}$$ = $$\frac{264}{7}$$.

Question 14.
20 × $$\frac{23}{40}$$
$$\frac{23}{2}$$,

Explanation:
When 20 is multiplied by $$\frac{23}{40}$$ we get $$\frac{20 X 23}{40}$$ = $$\frac{460}{40}$$ both goes by 20 we get $$\frac{20 X 1 X 23}{20 X 1 X 2}$$ = $$\frac{1 X 23}{1 X 2}$$ = $$\frac{23}{2}$$.

Question 15.
33 × $$\frac{6}{11}$$
$$\frac{198}{11}$$ = 18,

Explanation:
When 33 is multiplied by $$\frac{6}{11}$$ we get $$\frac{33 X 6}{11}$$ = $$\frac{11 X 3 X 6}{11}$$ = 3 X 6 = 18.

Question 16.
25 × $$\frac{16}{45}$$
$$\frac{80}{9}$$,

Explanation:
When 25 is multiplied by $$\frac{16}{45}$$ we get $$\frac{25 X 16}{45}$$ = $$\frac{400}{45}$$ both goes in 5 as $$\frac{80 X 5}{9 X 5}$$ = $$\frac{80}{9}$$.

Question 17.
Before setting out on a bike ride, each rider was given $$\frac{5}{8}$$ gallons of water to carry with them on the trip. If there are 28 people on the bike, ride, how much water was dispensed?
$$\frac{35}{2}$$ gallons of water,

Explanation:
When 28 people on the bike is multiplied by $$\frac{5}{8}$$ gallons of water to carry with them on the trip we get $$\frac{28 X 5}{8}$$ = $$\frac{140}{8}$$ both goes by 4 so $$\frac{35}{2}$$. Therefore $$\frac{35}{2}$$ water was dispensed before setting out on a bike ride.

Question 18.
Norbert estimates that it takes 1$$\frac{2}{7}$$ hours to complete one load of laundry. If Norbert’s dad has 8 loads of laundry to do, how long will it take him to finish?
$$\frac{72}{7}$$ or 10$$\frac{2}{7}$$,
Given Norbert estimates that it takes 1$$\frac{2}{7}$$ hours to complete one load of laundry. Then 1$$\frac{2}{7}$$ hours = $$\frac{1 X 7 + 2}{7}$$
= $$\frac{9}{7}$$ now long it will take Norbet to finish the work is $$\frac{9}{7}$$ X 8 = $$\frac{9 X 8}{7}$$ = $$\frac{72}{7}$$ as numerator
is greater than denominator we write in mixed fraction as $$\frac{10 X 7 + 2}{7}$$ = 10$$\frac{2}{7}$$.