Addition to 20
This is a minimal prep game to build fluency with basic addition and subtraction facts. Students will reinforce their understanding of fact families and inverse operations as they develop strategies to connect four squares in a row.
Two players per page.
9 pages with prewritten sums (color)
9 pages with prewritten sums (black and white)
1 page for student created sums (color)
1 page for student created sums (black and white)
Optional character markers (for use in place of paper clips)
Provide one Winter Sums page, 2-color counters, and 2 paper clips for each pair of students.
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CCSS.MATH.CONTENT.1.OA.B.3: Apply properties of operations as strategies to add and subtract.
Add and subtract within 20, demonstrating fluency for addition and subtraction within 10.
CCSS.MATH.CONTENT.1.OA.D.8: Determine the unknown whole number in an addition or subtraction equation.
Fluently add and subtract within 20 using mental strategies.2 By end of Grade 2, know from memory all sums of two one-digit numbers.