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What is column addition?

Oh, I didn't know you kept bees, Jerry? How many have you got? Oh look, Albert's found you some more! Ah, there you go! 95 more bees for your hive. So how many have you got in total now? Ah, don't ...
"Down and Dirty: A How to Math Book" is a solid primer for anyone needing to brush-up on the fundamentals of mathematics. Former educator and Grand Junction author Phyllis Hunsinger walks readers ...