3rd Grade Math - Estimating Addition Problems

This post explains and gives practice opportunities related to TEKS 3.4B:

round to the nearest 10 or 100 or use compatible numbers to estimate solutions to addition and subtraction problems

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Instruction

This standard uses both rounding and compatible numbers with the aim of estimating solutions to addition and subtraction problems.

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STAAR Practice

Between 2016 and 2025, this supporting standard has been tested 4 times on the STAAR test. Videos explaining each problem can be found below. If you'd rather take a quiz over these questions, click here. The videos below are linked to the questions in the quiz as answer explanations after the quiz is submitted.

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To view all the posts in this 3rd grade TEKS review series, click here.