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Properties and Methods of Addition

This topic covers the properties of addition. We learn about the Associative, Identity, and Commutative properties of addition. We also learn some quick methods to add/subtract whole numbers and decimals.
Practice Question
1

Find the number that makes the sentence true.

123 = __ + 123

 
Possible Answers
Your Answer
Correct Answer
A)

123
B)

0
C)

1
D)

-1
Practice Question
2

Find the number that makes the sentence true.

5 = __ + 5

 
Possible Answers
Your Answer
Correct Answer
A)

1
B)

5
C)

0
D)

-1
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