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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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$- Solving Mixed Problems within 20 (+ -) worksheet$ $- Solving Mixed Problems within 20 (+ -) worksheet$

- Solving Mixed Problems within 20 (+ -) worksheet

- Solving Mixed Problems within 20 (+ -) worksheet

Solving Mixed Problems within 20 (+ -)

Each worksheet has 20 problems solving addition and subtraction problems.

Load up one problem at a time! Ideal for projectors, tablets and computers.

Load up one problem at a time! Ideal for projectors, tablets and computers.

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