Question

Why is it important to focus on the zero and subtracting

Answer 1

Zero helps us understand that we can use math to think about things that have no counterpart in a physical lived experience; imaginary numbers don't exist but are crucial to understanding electrical systems. Zero also helps us understand its antithesis, infinity, in all of its extreme weirdness.Subtraction is an important tool we use to help us find out what is left when taking one number away from another. The numbers are divided into boxes so you can see the tens (T) and ones (O) place values. It's important that the place values line up.

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