Determine the unknown whole number in an addition or subtraction equation relating three whole numbers. For example, determine the unknown number that makes the equation true in each of the equations 8 + ? = 11, 5 = ＿ – 3, 6 + 6 = ＿.
Standard TypeMichigan State Math Standards
Warm up with a Mystery Math Mistake to find the error in DC's addition. Use different strategies to subtract including counting back and the connection between addition and subtraction. Use a number line to help count on to find a difference.
Match Story Problems to Equations
Represent 10 using a number bond and 10-frame with a missing addend. Use Notice and Wonder with a 10-frame, connecting cubes, and place-value cards to ask and answer math questions. Then, represent teen numbers using addition and subtraction equations and one 10. Math Mights was adapted from IM K-5 Math™ ©2021 by Illustrative Mathematics®, released under the Creative Commons Attribution […]
Join Mrs. Markavich for a missing addend word problem with Professor Barble. Next, we are going to look closely at addition problems to see when we make a new ten or when we don't. You will be an expert and looking carefully at addition problems!
Join Mrs. Markavich for a missing addend word problem with Professor Barble! Look out for two of our Math Might friends D.C. and Value Pak as they help us learn to add two-digit number in more than one way!