Math Nodes
There are a range of different nodes in the Math category, each of which performs a mathematical function or comparison on numbers.
Abs - The Absolute/Positive Value of a Number
Add - Add Two Numbers
Ceil - Ceiling (Round Up)
Clamp - Limit a number to a range
Condition - Condition / Expression
Div - Division
Floor - Floor (Round Lowest)
Max - Maximum of 2 values
Min - Minimum of 2 values
Mult - Multiplication
Round - Round (Round Nearest)
Scale - Re-scale a number
Sub - Subtract Two Numbers