Welcome to The 25 Vertical Adding 1's Questions with Sums up to 12 (A) Math Worksheet from the Addition Worksheets Page at Math-Drills.com. This math worksheet was created on 2015-12-14 and has been viewed 6 times this week and 350 times this month. It may be printed, downloaded or saved and used in your classroom, home school, or other educational environment to help someone learn math.
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