Finding Unknown Numbers | Missing Addends | First Grade Math Centers

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19 Ratings
Simply Creative Teaching
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27 pages
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I used these centers as spiraled practice. My students were engaged and the directions were simple enough for them to figure everything out themselves.
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  1. These are 1st grade math centers and math games for every 1st grade skill and standard. That's right! For each skill, you will access 3-5 math centers or math games that your students will love!2nd Grade Math Centers: Find them for every standard here!These 1st grade math centers include board games
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Practice 1st grade finding unknown numbers and work with missing addends using these math centers! Students will work on determining the unknown missing number or addend in addition and subtraction using part part whole. All equations & unknown numbers are within 20.

If you use Common Core, these math centers align with the 1st grade standard 1.OA.8.

Included are 4 different math centers for finding unknown numbers:

  1. Space Numbers: Students will use part-part-whole to put together addition puzzles.
  2. Monkey Missing Numbers: Students will match/solve word problems with missing numbers to the correct equation.
  3. Movie Missing Numbers: Students will choose a card and determine the missing number in the equation.
  4. Missing Number Puzzles: Students will find the four equations that have the same missing number for each puzzle.

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27 pages
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to see state-specific standards (only available in the US).
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 = ▯.


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