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Free printable math worksheet for practicing addition and subtraction within 20, featuring 30 equations and a challenge activity.

Math worksheet titled "Add and Subtract Within 20 Sheet 4" with 30 addition and subtraction problems and a challenge section using numbers 13, 9, 5, 6, and 4.

Math worksheet titled "Add and Subtract Within 20 Sheet 4" with 30 addition and subtraction problems and a challenge section using numbers 13, 9, 5, 6, and 4.

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