Lesson: Checking Two-Digit Subtraction Problems by Adding Mathematics

In this lesson, we will learn how to use addition to check subtraction and identify the related addition equation that can be solved to check the answer.

Lesson Plan

Students will be able to

use models to find the related addition for a subtraction problem,
write an addition sentence to check the solution to a subtraction problem,
check answers to subtraction word problems using addition.

Lesson Video

Lesson Playlist

02:48
01:56
+3

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