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Common Core · Grade 1 · Operations and Algebraic Thinking

Standard 1.OA.B.4

Free lessons and printable worksheets aligned to Common Core math standard 1.OA.B.4.

1 lessons1 worksheets

Lessons for 1.OA.B.4

Subtraction as an unknown addendTaking away and finding the missing part are the same question.Lesson

Printable Worksheets

Subtraction as an unknown addend worksheet (PDF)Printable worksheet with answer keyPreview