Welcome to The Adding and Subtracting Vigesimal Numbers (Base 20) (A) Math Worksheet from the Mixed Operations Worksheets Page at Math-Drills.com. This math worksheet was created or last revised on 2016-02-18 and has been viewed 5 times this week and 5 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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