What will my child learn in "Use estimation and error analysis"?

Use benchmarks and rounded values to judge work. This 3rd Grade Math lesson builds the skill Solve high-rigor synthesis problems with a concept card and practice.

What grade level is "Use estimation and error analysis" for?

"Use estimation and error analysis" is a 3rd Grade Math lesson in the Mastery challenge unit, designed for students around ages 8-9.

How many practice questions are in this lesson?

This lesson includes 57 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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Use estimation and error analysis

3rd Grade Math practice: A student says 49 + 52 - 18 = 121. Is the answer reasonable. Part of mastery challenge (Mastery challenge).

~10 min

Use benchmarks and rounded values to judge work.