100
0.05
100
20/100 ÷ 20 = 1/100 or 0.01
0.2
40 divided by 100 equals 0.4. 0.4 divided by 20 is 0.02.
20
put 45 over 100 like this 45/100 then reduce, in this case a common denominator would be 5 so 45 divided by 5 = 9 and 100 divided by 5 is 20, now you have 9/20 there are no more numbers that will divide into both 9 and 20 equally in whole numbers so thats it...... 9/20
5
20
20
100/20 - 3 = 2