WolframLang: Arithmetic Basics
here's the syntax for basic arithmetic.
Addition
(* short syntax *) 3+2 === 5 (* FullForm syntax *) Plus[3, 2] === 5
Substraction
3-2 === 1 (* FullForm syntax *) Plus[3,-2] === 1
Multiplication
3 * 2 === 6 (* FullForm syntax *) Times[3, 2] === 6
Multiplication can also be done with a space between numbers.
3 2 === 6
Division
3/2. == 1.5 (* FullForm syntax *) Times[3, Power[2., -1]] == 1.5
when integer is divided by another integer, result is an exact fraction.
Power
3^2 === 9 (* FullForm syntax *) Power[3, 2] === 9
Remainder, modular arithmetic
(* remainder, or modular arithmetic *) Mod[5, 2] === 1
Testing even/odd
EvenQ[4] === True OddQ[3] === True