Math Operators « Language Basics « Ruby

1.get acquainted with math operations in Ruby
2.Using Math Operators
3.A few of Ruby's assignment operators
4.Some of the operators have assignment shortcuts
5.unary operators, + and -, which indicate negative and positive numbers
6.methods such as div, modulo, divmod, quo, and remainder.
7.Division and Truncation careful when you use the div method
9.Abbreviated Assignment Operators

10.note Ruby does not have ++