Over 400 unique math questions that can be imported into Moodle. They are divided into the following groups so that you can easily manage which questions you want to use.
Addition 1-10 and 1-20
Subtraction 1-10 and 1-20
Subtraction with negative answers 1-10 and 1-20
Multiplication 1-10,
Division 1-100 with integer answers
Square roots 1-100 with integer answers
Square roots 1-400 with integer answers
Perfect squares 1-20
Exponents 1-10 with x^y ranging from 1 to 10 each

Note that Algebra Notation filter is require for Square roots to work correctly. The rest work just fine without it.