What I learnt in math this week

Today in room 11 we are learning how to turn numbers into fractions. Today I will be giving a little lesson that I hope can help you with it ( What I mean is learn something new ) Examples

90% - 90/100 or 9/10
80% - 80/100 or 8/10
20% - 20/100 or 2/10

Equation - Turn 70% into a fraction
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How to solve it:

To turn 70% into 7/10 and 70/100. To make it first get the 70 or if 7 the put a / next to it after that. The last step is to add 100 next to it or if the number is in its ones then put a  ( like - 6, 8, 4, 1, 3 ) 10 next to the / instead of 100.

Answer - 70/100 or 7/10
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Here are some practice equations to see if you learn't anything.     
90% -
20% -
4% -
8%-