3rd Grade Math - Composing/Decomposing Fractions

This post explains and gives practice opportunities related to TEKS 3.3D:

compose and decompose a fraction a/b with a numerator greater than zero and less than or equal to b as a sum of parts 1/b

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Instruction

This standard uses unit fractions (3.3C) to build and take apart fractions equal to or less than one.

Oral Language Development

Students process information through talking and conversing, not simply listening or watching a teacher demonstration. Here are some talk structures aligned with 3.3D to help you students unmute in the classroom.

You can find the Google Slide version here. You can also learn more about the Unmute model here.

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STAAR Practice

Between 2016 and 2025 (including redesign practice), this supporting standard has been tested 3 times on the STAAR test. Videos explaining the problems 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.