You don't. You learn to spell, instead!
0.5% = 0.005 as a decimal
It is: 9/2 = 4.5 as a decimal
Divide the top number by the bottom number. For example: 1/3 = 0.33 (rounded to the nearest hundreth) You often have to round off somewhere when making a decimal, but not always. For example: 1/4 = 0.25
that is a decimal
0.75
0.175
0.076923
It is 0.09
1/5
It is simply -81.0 as decimal
It is -7.5 as a decimal
3/5 = 0.6
135 ÷ 100 = 1.35
What is 11 hundredths as a decimal
12 ÷ 100 = 0.12