Fact Fluency Check

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Addition is the process of calculating the total of two or more numbers or amounts.

Subtraction is the process of taking one number away from another.

The identity property of addition states that the sum of any number and zero is that number.

The identity property of subtraction states that subtracting zero from any number leaves that number unchanged.

A number line is a straight line with numbers placed at equal intervals along its length, used to visualize addition and subtraction.