Addition and Subtraction by Hand - An in-depth look

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In this video I go in depth on basic subtraction and addition by hand to make it easier to understand how 2 numbers and their corresponding digits subtract or add. Last year in my final exam my calculator battery died so I was stuck with doing hand calculations of very large numbers so I think it's worth it to brush up on some hand calculations here.


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Addition and Subtraction by Hand

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In depth look

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