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CHECKING WITH INVERSE OPERATIONS

Use the opposite operation to check if your answer is correct.

L3L4L5
CS.N.3.6(III)CS.N.4.3(IV)
Section 1 / 3
LESSONS.CONTENT.MENTALTRICKSINVERSECHECK.S1TITLE

lessons.content.mentalTricksInverseCheck.s1Body

Check: 47 + 38 = 85?
1Use inverse: 85 − 38 = ?
285 − 38 = 47 ✓
3Correct!
= 85

LEADER TIP

Make 'check your answer' a non-negotiable step. Inverse operations catch most arithmetic errors.

BEFORE THIS LESSON, TRY

🔗Inverse Multiplication

PRACTICE WITH THESE GAMES

📐Expression Compare🧱Equation Builder🔍Find the Operation

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