Estimate Differences Using Rounding and Compatible Numbers | Grade 3

This is Lesson 7: Estimate Differences
in Topic 8: Use Strategies and Properties to Add and Subtract.

In this lesson, we use 2 methods to estimate the difference.
The first method is: Rounding Numbers (to the nearest ten or to the nearest hundred).
The second method is: using Compatible Numbers.

Watch the previous lesson (Lesson 6: Estimate Sums)

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