There are different methods for addition and subtraction. You may have used column addition and subtraction before but sometimes you can solve additions and subtractions using a mental method.

Here you will find a video about addition and subtraction. Watch this, and then test your knowledge with a short quiz before exploring the rest of the collection. This section contains videos from ...

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A high school student, for example, who regularly makes errors of addition and subtraction, may still be capable of extremely advanced conceptual thinking. The fact that math skills are not ...

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CBS Sports has reported that ESPN, which lost the Big Ten, would be in favor of the addition. UConn basketball would be a ratings winner, plus the Huskies' campus is only 14 miles away.