Distributed practice information

For students in the standard Grade 6-8 (3 year) course, this problem is a review of Grade 6, Unit 5, Lesson 13.

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_{IM 6–8 Math was originally developed by Open Up Resources and authored by Illustrative Mathematics®, and is copyright 2017-2019 by Open Up Resources. It is licensed under the Creative Commons Attribution 4.0 International License (CC BY 4.0),creativecommons.org/licenses/by/4.0/. OUR's 6–8 Math Curriculum is available at https://openupresources.org/math-curriculum/.Adaptations to add additional English language learner supports are copyright 2019 by Open Up Resources,openupresources.org, and are licensed under the Creative Commons Attribution 4.0 International License (CC BY 4.0), https://creativecommons.org/licenses/by/4.0/.}

_{The second set of English assessments (marked as set "B") are copyright 2019 by Open Up Resources, openupresources.org, and are licensed under the Creative Commons Attribution 4.0 International License (CC BY 4.0), https://creativecommons.org/licenses/by/4.0/.}

_{Spanish translation of the "B" assessments are copyright 2020 by Illustrative Mathematics, www.illustrativemathematics.org,and are licensed under the Creative Commons Attribution 4.0 International License (CC BY 4.0), https://creativecommons.org/licenses/by/4.0/.}

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6.6.8.7, Additional Practice