1 Roman numerals, \(\mathrm{I},\) \(\mathrm{X},\) and \(\mathrm{C}\)

1 Divisibility by 2

2 Even and Odd

3 Divisibility by 5

4 Divisibility by 10

5 Least Common Multiple (LCM)

6 Greatest Common Divisor (GCD)

7 Find all factors of a number

8 Prime numbers