Subject
Resource Type
Common Core Standards
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PDF (Acrobat) Document File

22 MB|26 pages
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Product Description
This set includes 5 engaging activities that could be used in math tubs or centers to practice the tricky skill of solving for missing addends. Students will focus on learning facts with sums valued 20 and less. This unit is appropriate for detectives in grades 1 - 2.

*The Case of Some Story Problems (Story Problems with Missing Addends)
*The Case of the Broken Equations (Match Game)
*The Case of the Missing Chips (Partner Game - Adding to 20)
*The Case of the Addend On Your Head (Bundle of 3 Game - Logic and Basic Facts)

1.OA.D.8 - 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 = __.

2.OA.B.2 - Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.

Check out my other Missing Addends Products:

Keywords: Missing Addends Equations, Detective Math Centers, Missing Number Sentences, 1.OA.8, 2.OA.2
Total Pages
26 pages
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