McGraw Hill Math Grade 1 Chapter 7 Lesson 2 Answer Key Adding Three Numbers

All the solutions provided in McGraw Hill Math Grade 1 Answer Key PDF Chapter 7 Lesson 2 Adding Three Numbers as per the latest syllabus guidelines.

McGraw-Hill Math Grade 1 Answer Key Chapter 7 Lesson 2 Adding Three Numbers

Add

Write the sum.

Question 1.
(2 + 1) + 4 = 7
2 + (1 + 4) = 7
Explanation:
 Changing the order of addends does not change the sum.
According to the Commutative property

Question 2.
(5 + 3) + 1 = ___
5 + (3 + 1) = ___
Answer:
(5 + 3) + 1 = 8 + 1 = 9
5 + (3 + 1) = 5 + 4 = 9
Explanation:
 Changing the order of addends does not change the sum.
According to the Commutative property

Question 3.
(2 + 4) + 2 = ___
2 + (4 + 2) = ___
Answer;
(2 + 4) + 2 = 6 + 2 = 8
2 + (4 + 2) = 2 + 6 = 8
Explanation:
 Changing the order of addends does not change the sum.
According to the Commutative property

Question 4.
(1 + 5) + 7 = ____
1 + (5 + 7) = ___
Answer:
(1 + 5) + 7 = 6 + 7 = 13
1 + (5 + 7) = 1 + 12 = 13
Explanation:
 Changing the order of addends does not change the sum.
According to the Commutative property

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