Count up or down on an open number line. Explore a subtraction strategy and see if it helps you to subtract. Engage in a Number Talk.
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.
MI.Math.Content.2.NBT.B.5 Use place value understanding and properties of operations to add and subtract
Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.