Practice the questions of **McGraw Hill Math Grade 4 Answer Key PDF Chapter 8 Test **to secure good marks & knowledge in the exams.

## McGraw-Hill Math Grade 4 Chapter 8 Test Answer Key

**Add or subtract. Write your answers in simplest form.**

Question 1.

Answer:

The Denominators of the given fractions are same so add the numerators.

3/5 + 1/5

= 3 + 1/5

= 4/5.

Question 2.

Answer:

The Denominators of the given fractions are same so add the numerators.

1/8 + 5/8

= 6/8

= 3/4.

Question 3.

Answer:

3 x (3/4) = 15/4

5 x (2/4) = 22/4 = 11/2

Here the denominators are not equal. so, 15/4 + 11/2

= (15 x 2) + (11 x 4) ÷ 4 x 2

= 30+44/8

= 74/8

The 74/8 can be written has 9 x 1/4

Question 4.

Answer:

47 x (3/13) = 614/13

24 x (10/13) = 322/13

The Denominators of the given fractions are same so add the numerators.

614/13 + 322/13 = 72

Question 5.

Answer:

The Denominators of the given fractions are same so subtract the numerators.

8/9 – 5/9

= 8-5/9

= 3/9

= 1/3

Question 6.

Answer:

The Denominators of the given fractions are same so subtract the numerators.

9/10 – 4/10

= 9-4/10

= 5/10

= 1/2

Question 7.

Answer:

9 x (5/6) = 59/6

7 x (3/6) = 45/6

The Denominators of the given fractions are same so subtract the numerators.

59/6 – 45/6

= 59-45/6

= 14/6

= 7/3

7/3 can be written as 2 x 1/3.

Question 8.

Answer:

5 x (3/5) = 54/5

16 x (4/5) =28/5

The Denominators of the given fractions are same so subtract the numerators.

54/5 – 28/5

= 54-28/5

= 26/5

26/5 can be written has 5 x 1/5

Question 9.

Answer:

The Denominators of the given fractions are same so add the numerators.

8/16 + 5/16

= 8+5/16

= 13/16

Question 10.

Answer:

The Denominators of the given fractions are same so subtract the numerators.

12/14 – 8/14

= 12-8/14

= 4/14

= 2/7

Question 11.

Answer:

38 x (4/8) = 308/8

43 x (3/8) = 347/8

The Denominators of the given fractions are same so add the numerators.

308/8 + 347/8

= 308+347/8

= 655/8

= 81 x 7/8

Question 12.

Answer:

69 x (3/3) = 210/3

24 x (1/3) = 73/3

The Denominators of the given fractions are same so subtract the numerators.

210/3 – 73/3

= 210-73/3

= 137/3

= 45 x 2/3

**Solve. Write your answers in simplest form.**

Question 13.

A family bought apples at a farmer’s market. They bought a bag of red apples that weighed 7\(\frac{4}{8}\) pounds and a bag of green apples that weighed 3\(\frac{3}{8}\) pounds on Saturday. How many pounds of apples did they buy?

Answer:

The family bought a bag of red apples = 7 x (4/8) pounds = 60/8

The family bought a bag of green apples = 3 x (3/8) pounds = 27/8

The Denominators of the given fractions are same so add the numerators.

60/8 + 27/8 = 60-27/8

= 87/8

= 10 x 7/8

Hence, the total number of apples that the family bought is 2 x (7/8) pounds.

Question 14.

Alex makes a salad for the family. He uses 4\(\frac{2}{9}\) cups of lettuce, 1\(\frac{1}{9}\) cups of tomatoes, and 2\(\frac{4}{9}\) cups of cucumbers. How many more cups of lettuce does he use than cucumbers?

Answer:

Given that,

The total number of lettuce cups = 4 x (2/9) cups = 38/9.

The total number of tomato cups = 1 x (1/9) cups = 10/9.

The total number of cucumber cups = 2 x (4/9) cups = 22/9.

Therefore the lettuce cups more than cucumber cups is 38/9 – 22/9

The Denominators of the given fractions are same so subtract the numerators.

= 38-22/9

= 16/9

= 1 x 7/9 cups.

Hence, the number of lettuce cups more than the cucumber cups is 1 x 7/9 cups.

**Solve. Write your answers in simplest form.**

Question 15.

Write \(\frac{4}{9}\) as a sum of fractions.

Answer:

Given that the fraction is 4/9.

The sum of the fraction of 4/9 is 1/9 + 1/9 + 1/9 + 1/9.

Question 16.

Write 1\(\frac{3}{5}\) as a sum of fractions.

Answer:

Given that the mixed fraction is 1 x (3/5)

1 x (3/5) = 8/5

The sum of the fractions of 8/5 is 1/5 + 1/5 + 1/5 + 1/5 + 1/5 + 1/5 + 1/5 +1/5.

**Multiply. Write your answers in simplest form. Draw pictures if you need help.**

Question 17.

4 × \(\frac{1}{3}\) = ______________

Answer:

Multiply 4 x 1/3 then you get 4/3

Question 18.

5 × \(\frac{3}{4}\) = ______________

Answer:

Multiply 5 x 3/4 then you get 23/4

Question 19.

3 × \(\frac{3}{5}\) = ______________

Answer:

Multiply 3 x 3/5 then you get 18/5

Question 20.

7 × \(\frac{4}{8}\) = ______________

Answer:

Multiply 7 x 4/8 then you get 60/8.

**Solve. Write your answers in simplest form.**

Question 21.

Jason is practicing for a footrace. He runs 7\(\frac{3}{8}\) miles the first week and 9\(\frac{6}{8}\) miles the second week. How many miles does Jason run in all?

Answer:

Given that,

Jason runs in the first week = 7 x (3/8) = 59/8

Jason runs in the second week = 9 x (6/8) = 78/8

The Denominators of the given fractions are same so add the numerators.

59/8 + 78/8

= 59+78/8

= 137/8

= 17 x 1/8

Hence, Jason run in all is 17 x 1/8 miles.

Question 22.

76 vehicles are in a parking lot. \(\frac{1}{4}\) of them are trucks. How many trucks are in the parking lot?

Answer:

Given that,

The total number of vehicles in the parking is 76.

The number of trucks in the parking lot is \(\frac{1}{4}\) = 1/4

Therefore 76 x 1/4 = 19.

The total number of trucks in the parking lot is 19.

Question 23.

A hardware store sold 7\(\frac{8}{10}\) feet of chain in one week. The store sold 4\(\frac{3}{10}\) feet of chain the next week. How many more feet of chain did the store sell in the first week?

Answer:

Given that,

The hardware store sold a chain in one week = 7 x (8/10) = 78/10.

The hardware store sold a chain in next week = 4 x (3/10) = 43/10.

The Denominators of the given fractions are same so subtract the numerators.

78/10 – 43/10

= 78-43/10

= 35/10

= 7/2

= 3 x 1/2

Hence, the chain sold in one week is 2 x (1/2) feet’s longer then chain sold in next week.

Question 24.

Linda travels to visit friends. She drives for a total of 23 miles. Damon also visits friends, but his trip is \(\frac{2}{3}\) as long as Linda’s. How many miles does Damon drive?

Answer:

Given that,

Linda travels to visit friends and she drives for a total of 23 miles.

Damon also visits friends, but his trip is \(\frac{2}{3}\) as long as Linda’s.

\(\frac{2}{3}\) = 2/3

Therefore Lind’s drive = 23 + 2/3 = 23 x 2/3.