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How to Perform mental subtraction for math class

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Having problems with subtraction. For some people, mathematics doesn't come easy, but there are tricks to solving certain problems, like subtraction. Check out this math video tutorial to learn how to perform mental subtraction for math class.

Learn to calculate and subtraction problem mentally and simultaneously say the answer aloud! Check out the "look ahead and borrow method" and the "conventional method" and see which one works for you.

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