Addition within 20 — Grade 1
1.OA.6Operations & Algebraic ThinkingSolve each problem. Write your answer in the box.
3 printable addition within 20 worksheets for Grade 1 , each with a separate answer key. Variants get progressively harder, so you can use them across a week or differentiate within one class.
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Free for personal, classroom and homeschool use. Print and copy for the students you teach. Please do not resell or re-host the files.