i only have the answers to 2 & 3
2. 12/30
to get a denominator of 30 from 5, you multiply it by 6
so to get the numerator, you would do the same
2 x 6 = 12
resulting in 12/30
3. the 25/40
36/96 simplified is 6/16
25/40 simplified is 5/8
multiply the numerator and denominator by 2 to 5/8 to get a common denominator
6/16 < 10/16
or an easier way is
36/96 = 0.375
25/40 = 0.625
0.375 < 0.625
either way you still get the same answer
