Well, isn't that just a happy little math problem? To turn 18 over 20 into a decimal, you simply divide 18 by 20. When you do that, you get 0.9. Just like painting, math can be a beautiful way to express yourself!
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decimal for 20 over 30 = 0.6666...20/30:= 20 ÷ 30= 0.6666... in decimal
18 over 20 -- 18/20 -- is a fraction that can be reduced to 9/10. Like all fractions, it is an expression of the division function. The "slash" means "divided by." Thus 18/20 = 9/10 = nine divided by ten = 0.9 in decimal form. For a little calculator fun, try this: punch in 18 divided by 20, then punch in 9 divided by 10. I'll bet you'll get the exact same answer.
It is: 13/20 = 0.65 as a decimal
17/20 = 0.85 as a decimal
To convert 10 over 20 into a decimal, you simply divide the numerator (10) by the denominator (20). So, 10 divided by 20 equals 0.5. Therefore, 10 over 20 as a decimal is 0.5.