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

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

**Identify each number as prime or composite.**

Question 1.

16 _____

Answer:

16 = composite number.

Explanation:

A prime number is a whole number greater than 1 whose only factors are 1 and itself. A factor is a whole number that can be divided evenly into another number.

A composite number is a positive integer that can be formed by multiplying two smaller positive integers.

16 = 2 × 8 or 4 × 4.

Question 2.

13 _____

Answer:

13 = Prime number because 1 and itself.

Explanation:

Factors of 13:

13 = 1 × 13.

Question 3.

8 _____

Answer:

8 = composite number.

Explanation:

Factors of 8:

2 × 4 = 8.

1 × 8 = 8.

Question 4.

61 _____

Answer:

61 = Prime number because 1 and itself.

Explanation:

Factors of 61:

1 × 61 = 61.

Question 5.

90 _____

Answer:

90 = composite number.

Explanation:

Factors of 90:

1 × 90 = 90.

2 × 45 = 90.

5 × 18 = 90.

6 × 15 = 90.

9 × 10 = 90.

Question 6.

79 _____

Answer:

79 = Prime number because 1 and itself.

Explanation:

Factors of 79:

1 × 79 = 79.

**Find all the factor pairs of each number.
**Question 7.

7 ____

Answer:

1 × 7 = 7.

Explanation:

Factor pairs of 7:

1 × 7 = 7.

Question 8.

18 ____

Answer:

1 × 18 = 18.

2 × 9 = 18.

3 × 6 = 18.

Explanation:

Factor pairs of 18:

1 × 18 = 18.

2 × 9 = 18.

3 × 6 = 18.

Question 9.

63 _____

Answer:

1 × 63 = 63.

3 × 21 = 63.

7 × 9 = 63.

Explanation:

Factor pairs of 63:

1 × 63 = 63.

3 × 21 = 63.

7 × 9 = 63.

**Write “yes” or “no” for each question.
**Question 10.

Is 15 a multiple of 2? ____

Answer:

No, 15 is not a multiple of 2.

Explanation:

Multiples of 15:

1 × 15 = 15.

3 × 5 = 15.

Question 11.

Is 75 a multiple of 5? ____

Answer:

Yes, 75 is a multiple of 5.

Explanation:

Multiples of 75:

1 × 75 = 75.

3 × 25 = 75.

5 × 15 = 75.

Question 12.

Is 72 a multiple of 9? ____

Answer:

Yes, 72 is a multiple of 9.

Explanation:

Multiples of 72:

1 × 72 = 72.

2 × 36 = 72.

3 × 24 = 72.

4 × 18 = 72.

6 × 12 = 72.

8 × 9 = 72.

Question 13.

Is 54 a multiple of 5? ____

Answer:

No, 54 is not multiple of 5.

Explanation:

Multiples of 54:

1 × 54 = 54.

2 × 27 = 54.

3 × 18 = 54.

6 × 9 = 54.

**Solve. Write the expressions you use and the answers.
**Question 14.

Ms. Williams is making a large pot of chili for a party. The recipe calls for 5 times as many beans as peppers. If she uses 2 cups of peppers, how many cups of beans will she need?

Answer:

Number of cups of beans will she needs = 10.

Explanation:

The recipe calls for 5 times as many beans as peppers.

Number of cups of peppers she uses = 2.

Number of cups of beans will she needs = 5 times × Number of cups of peppers she uses

= 5 × 2

= 10.

Question 15.

Jada made a model of an alligator for a science report. The model was 3 feet long. The actual alligator is 4 times as long as the model. How long is the alligator?

Answer:

Number of feet the model = 3.

The actual alligator is 4 times as long as the model.

Number of feet of alligator =