Subtraction Strategies

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This video will show you a few subtraction strategies from the common core. I will cover the Add up method, Constant Difference, and Break-Apart Strategies in this video.
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Since I learned that there were different ways to solve subtraction problems, I don't even use the standard algorithm. Adding/Counting Up comes most naturally to my brain. I also like this method called Partial Differences subtraction. It's where you use positive and negative numbers, so you don't have to "borrow." I also use various compensation strategies.

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Very nicely explained - we grew up learning only "borrow a number" one and nowadays there are so many of these being taught in the schools.

tellshami