Homework Explained - Math Practice 101

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Grade 3 Go Math Practice - Answer Keys
Common Core


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Lesson 1.1

Find the sum. Then use the Commutative Property of Addition to write the related addition sentence.

Lesson 1.2

Round to the nearest ten and hundred.

Lesson 1.3

Use rounding or compatible numbers to estimate the sum.

Lesson 1.4

Use mental math to find the sum.

Lesson 1.5

Use addition properties and strategies to find the sum.

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