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1oa8 Worksheets

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Operations and Algebraic Thinking Work with addition and subtraction equations. 8Determine the unknown whole number in an addition or subtraction equation relating to three whole numbers. For example, determine the unknown number that makes the equation true in each of the equations 8 + ? = 11, 5 = ?– 3, 6 + 6 = ?.
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Solving Mixed Problems within 20 (+ -)

1oa8 Worksheets - solving-mixed-problems-within-20 worksheet 1oa8 Worksheets - solving-mixed-problems-within-20 worksheet
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