The subtract (
-) operator allows you to subtract two numbers and return their difference.
number - number subtract(number, number)
When used in mathematical equations, the
- operator follows the standard mathematical order of operations (PEMDAS). For more detail, see Operator Precedence.
You can also use the function version,
12 - 5 // Output: 7 subtract(5,12) // Output: -7
Working with 3 or More Operands
Since subtract is a binary operator, it can only work on two operands – the objects which are being operated on (if – the ternary operator – is the only operator that works on three operands).
If you need to work with more than two operands, the shorthand
- is by far the easiest way to do it.
40 - 10 - 5 // Output: 25 subtract(subtract(40,10),5) // Output: 25
The example database below tracks a weekend of treasure-spending by three pirates. Each starts with a Start Budget of $3,000, and the Leftover formula shows how much each has left after the weekend.
View and Duplicate Database
Note how I’ve set the number format of each column to U.S. Dollar. I’ve also set each column’s Calculate value to Sum, allowing me to see the total of all rows put together.
“Leftover” Property Formula
prop("Start Budget") - prop("Saturday") - prop("Sunday")
Instead of using hard-coded numbers, I’ve called in each property using the