Arithmetic

Computers were designed to run lots of calculations, so its easy to do maths. You can use the following basic math functions:

• + add numbers together
• - subtract numbers from each other
• * multiply numbers together
• / divide numbers

Look at these examples of Clojure code and their equivalent math expression:

(+ 1 1)         ;=> 1 + 1 = 2
(- 12 4 1)      ;=> 12 - 4 - 1 = 7
(* 13 2 10 2)   ;=> 13 * 2 * 10 * 2 = 520
(/ 27 9)        ;=> 27 / 9 = 3

;;
(+ 4/3 7/8)   ;=> 53/24
(- 9 4.2 1/2) ;=> 4.3
(/ 27/2 1.5)  ;=> 9.0

Math looks a little different in Clojure because +, -, *, / are functions, which take numbers as arguments.