#### New to expressions and formulas? Try Expressions: The Essentials

You can also learn more about other types of expressions.

## Math Operators

The common numeric operators below may be used in math expressions.

#### Add

The plus character (`+`

) between two numeric values produces the result of adding them together. If both values are of the *Number* type, the result will be a *Number*; otherwise the result will be *Decimal*.

Examples:

`2 + 2`

`[Count] + 1`

`[Price] + [Tax]`

#### Divide

The slash character (`/`

) between two numeric values produces the result of dividing the left value by the right value. If both values are of the *Number* type, the result will be a *Number*; otherwise the result will be *Decimal*.

Examples:

`4 / 2`

`([Day Count] / 7.0)`

`[Total] / [Unit Count]`

#### Multiply

The asterisk character (`*`

) between two numeric values produces the result of multiplying them together. If both values are of the *Number* type, the result will be a *Number*; otherwise the result will be *Decimal*.

Examples:

`(10.0 * 10)`

`[Week Count] * 7`

`[Unit Cost] * [Unit Price]`

#### Negate

The minus character (`-`

) preceding a single numeric value produces the arithmetic negation of the value: a positive value becomes negative, a negative value becomes positive. The type of the result will match that of the original value.

Examples:

`-18.56`

`-[Unit Count]`

`-([Seat Count] * [Gift Value])`

#### Subtract

The minus character (`-`

) between two numeric values produces the result of subtracting the right value from the left value. If both values are of the *Number* type, the result will be a *Number*; otherwise the result will be *Decimal*.

Examples:

`124.0 - 18.9`

`(14.0 - [Vacation Days Used])`

`[Price] - [Discount]`

## Math Functions

Math functions may also be used anywhere math expressions may be used.

*ABS()*: Absolute value*AVERAGE()*: Average of list of values*CEILING()*: Nearest higher*Number**FLOOR()*: Nearest lower*Number**LN()*: Natural log*LOG()*: Logarithm*LOG2()*: Log base 2*LOG10()*: Log base 10*MOD()*: Remainder from*Number*division*POWER()*: Exponentiation*RANDBETWEEN()*: Random*Number**ROUND()*: Nearest*Number**SQRT()*: Square root*STDEVP()*: Standard deviation of list of values*SUM()*: Sum of list of values

## Numeric Types

AppSheet understands two basic numeric data types:

*Decimal*: numbers that include a decimal point separating a whole number component from a fractional component. For example: -0.03, 0.0, 3.14159, 14.99. Also known as a real number or floating-point number. The number of digits displayed after the decimal point (2 by default) can be changed in a *Decimal* column's configuration. The display format is also affected by the app user's locale.

*Number*: numbers that do not include a decimal point. For example: -29, -5, 0, 732, 4096. Also known as integers or whole numbers.

Several other data types are based on the above:

*Percent* is a *Decimal* with special display characteristics. For example, a *Percent* value of 0.0 is displayed as 0%; 0.05 is displayed as 5%; 0.2 as 20%; and 1.0 as 100%.

*Price* is a *Decimal* with special display characteristics. For example, a *Price* value of 0.0 is displayed as $0.00; 5.2 is displayed as $5.20; 67.482 as $67.48; and 100.0 as $100.00. The currency symbol ($ by default) can be changed in a *Price* column's configuration.