Rounding & Proportions

Specify the amount of decimal places to round an answer to. This will override the line's default precision settings.

# Rounding to a particular number of decimal places
1/3 to 2 dp                                    | 0.33
π to 5 digits                                  | 3.14159

# Rounding up and down
5.5 rounded                                    | 6
5.5 rounded down                               | 5
5.5 rounded up                                 | 6

# Rounding to nearest x
37 to nearest 10                               | 40
$490 rounded to nearest hundred                | $500
2,100 to nearest thousand                      | 2,000

# Rounding up and down to nearest x
21 rounded up to nearest 5                     | 25
17 rounded down to nearest 3                   | 15

Or use one of the following functions:

Function	Name	Behaviour
round()	Integer round	Rounds a number to the nearest integer
ceil()	Ceiling	Rounds a number up to the nearest whole number
floor()	Floor	Rounds a number down to the nearest whole number

Proportions / rule of three

Known as the rule of three, these phrases help you find the number required to maintain a proportion.

6 is to 60 as 8 is to what                     | 80
5 is to 10 as what is to 80                    | 40

These phrases also work with units:

5 km is to 500m as 5 cm is to what                       | 5 mm
30 minutes is to 3 hours as what is to 60 seconds        | 10 seconds