Practice the questions of **McGraw Hill Math Grade 4 Answer Key** **PDF Chapter 2 Lesson 1 Addition Properties** to secure good marks & knowledge in the exams.

## McGraw-Hill Math Grade 4 Answer Key Chapter 2 Lesson 1 Addition Properties

**Complete and Identify
**

**Complete each number sentence. Then identify the addition property shown in each number sentence.**

Question 1.

(8 +

__17__) + 23 = 8 + (17 + 23)

__Associative Property of Addition__

Answer:

(8 + 17) + 23 = 8 + (17 + 23) = 48.

Associative Property of Addition.

Explanation:

(8 + 17) + 23 = 8 + (17 + 23)

= 8 + 40

= 48.

Question 2.

899 + ___ = 899

Answer:

899 + 0 = 899.

Identity property of addition..

Explanation:

899 + ?? = 899

=> ?? = 899 – 899

=> ?? = 0.

Question 3.

45 + 31 = 31 + ___

Answer:

45 + 31 = 31 + 45.

Identity property of addition.

Explanation:

45 + 31 = 31 + ??

=> 76 – 31 = ??

=> 45 = ??

Question 4.

14 + 6 = ___ + 14

Answer:

14 + 6 = 6 + 14.

Identity property of addition.

Explanation:

14 + 6 = ?? + 14

=> 20 = ?? + 14

=> 20 – 14 = ??

=> 6 = ??.

Question 5.

(24 + 12) + 8 = ___ + (12 + 8)

Answer:

(24 + 12) + 8 = 24 + (12 + 8)

Associative property of addition.

Explanation:

(24 + 12) + 8 = ?? + (12 + 8)

=> 36 + 8 = ?? + (12 + 8)

=> 44 = ?? + 20

=> 44 – 20 = ??

=> 24 = ??.

Question 6.

(23 + 0) + 42 = ___ + 42

Answer:

(23 + 0) + 42 = (23 + 0) + 42.

Associative property of addition.

Explanation:

(23 + 0) + 42 = ?? + 42.

=> (23 + 0) + 42 – 42 = ??

=> (23 + 0) = ??

Question 7.

Pedro says that when zero is added to a number, the sum is always zero. Is he correct? Why or why not?

Answer:

No, Pedro is incorrect because zero added to any number, result is the number itself.

Explanation:

When zero is added to a number, the sum is always not a zero because zero added to any number, result is the number itself.

2 + 0 = 2.