Remember that percentages mean 'out of a hundred'. for example 6% means 6 out of a hundred or 6/100
Conversely, 6/100 or 'six hundredths' can also be written as 0.06...
7.
1/2=0.5
Remember that 0.5 reads as 'five tenths' or 5/10

or 50%
8.
You can just plug this fraction into a calculator...
9/10=0.9
9.

Cross multiply
20x=1100
Divide both sides by 20
x=
55%
10.
75%
Remember that 75% is the same as saying 75 out of 100, or 75/100
75/100 can be simplified to 3/4
75 ÷25 3
____ =___
100 ÷25 4
11.
Plug the fraction into your calculator.
3/5=0.6
or 60%
12.
9/25
Just plug the fraction into your calculator
9/25=0.36
13.
29/50=.58
0.58=50/100=58%
14.
1/20=0.05
0.05=5/100=5%
15.
4%=4/100
4/100 can be simplified to 1/25
16.
4/5=0.8
0.8=80/100=80%
17.
24/25=.96
18.
41/50=82/100=82%