Natural numbers
Counting numbers excluding 0 (1, 2, 3…)
Integer numbers
All positive and negative numbers (…-1, 0, 1…)
Rational numbers
Numbers that can be written as a fraction (a/b, where a and b are integers)
Irrational numbers
Cannot be written as a fraction (e.g. π and e)
Real numbers
Anything on the number line
Surd rules
Pg3