Lesson 4: Number Variables and Math
Variables can hold numbers, and we can do arithmetic on numbers: add, subtract, multiply, divide.
In Python + adds, - subtracts, * multiplies, / divides — exactly like a calculator.
- integer (int)
- A whole number without a decimal point, like 7.
- float
- A number with a decimal point, like 3.14.
- operator
- A sign that performs an action: + - * /
