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Fair Use Agreement This agreement covers the use of this presentation, please read carefully. You may freely use these slides for teaching, if You send me an email telling…

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Operations and Numerical Fluency 25 + 25 = 10 + 10 + 5 + 10 + 10 + 5 = 10, 20, 25, 35, 45, 50 20 + 20 + 5 + 5 = 40 + 10 = 50 I just thought of it as 2 quarters and 2 quarters…