What Kids Learn in Math Class that You Never Learned: Elementary Mental Addition and Subtraction Strategies: Part 2
What Kids Learn in Math Class that You Never Learned: Elementary
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How do some people add and subtract in their heads so quickly, while others have to go step-by-step through the algorithm or pull out a calculator? Find out some more strategies students are taught to add and subtract mentally in Part 2 of this lesson.

Exercise Files
MentalMath2 (pdf)
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