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Addition Within 20 - Little Worksheets

Adding Within 20 . When you are adding numbers with double digits in the problem, make sure to add the numbers in the ones column first. Work from right to left! 5 12 9 8 + 10 + 0 + 11 + 1 . 1 7 4 13 + 13 + 6 + 6 + 7 ...