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The word Arithmetic isn't used outside of mathematics; it generally refers to the concepts of + addition, - subtraction, ∗ Multiplication, and ÷ division

Addition

Notation	Say	Result
\( a + b \)	\(a\) plus \(b\)	the sum of \(a\) and \(b\)

Subtraction

Notation	Say	Result
\( a - b \)	\(a\) minus \(b\)	the difference of \(a\) and \(b\)

Multiplication

Notation	Say	Alternate Say	Result
\( a \cdot b, ab, (a)(b), a(b) \)	\(a\) times \(b\)	\(a\) multiplied by \(b\)	the product of \(a\) and \(b\)

Division

Notation	Say	Alternate Say	Result
\( a \div b, a/b, \frac{a}{b} \)	\(a\) over \(b\)	\(a\) divided by \(b\)	the quotient of \(a\) and \(b\)

Equality and Inequality

When two quantities have the same value, we say they are equal and connect them with an equal sign.

Equality Symbol ("Equals Sign"): \( a = b \) is read “a is equal to b”

On the number line, the numbers get larger as they go from left to right. The number line can be used to explain the symbols “<” and “>”.

Inequality:

\( a < b \) is read “a is less than b”
\( a > b \) is read “a is greater than b”