Usually shortened to “float”. Any number that has decimal places e.g. `2.0`

, `3.14159`

, `-43.982`

, `0.00005`

Named for the fact that the decimal point can “float” anywhere in the number, since there isn’t a fixed number of digits before or after the decimal point (e.g. `100.05`

has the decimal point after the third number, but `4.9543`

has it after the first number, even though both have 5 digits).