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Warm up with a Mystery Math Mistake as you add two 2-digit numbers using a decomposition strategy. What do you know about measurement? Measure with centimeter cubes to find the length of reptiles. Then answer some questions about the length of reptiles by adding and subtracting within 100.

Math Mights was adapted from IM K-5 Math™ ©2021 by Illustrative Mathematics®, released under the Creative Commons Attribution 4.0 International License (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/.

Additions and adaptations are ©2021 by Strategic Intervention Solutions, LLC.

Related Standards: MI.Math.Content.2.MD.A.1, MI.Math.Content.2.MD.A.3, MI.Math.Content.2.MD.A.4, MI.Math.Content.2.NBT.B.5

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