What will my child learn in "Judge reasonableness of solutions"?

Students use estimation and structure to decide if an answer makes sense. This 2nd Grade Math lesson builds the skill Flexible strategies with place value and computation with a concept card and practice.

What grade level is "Judge reasonableness of solutions" for?

"Judge reasonableness of solutions" is a 2nd Grade Math lesson in the Extension: Mastery unit, designed for students around ages 7-8.

How many practice questions are in this lesson?

This lesson includes 60 practice questions with instant feedback. Guests can try a few for free, and signed-in learners get the full adaptive set that adjusts to their level.

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Judge reasonableness of solutions

2nd Grade Math practice: A student says 612 - 298 = 504. Is this reasonable. Part of extension: mastery (Extension: Mastery).

~10 min

Students use estimation and structure to decide if an answer makes sense.