It is: -0.8 = -4/5 as a simplified fraction
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1.08 written as a fraction is 1 2/25. Here's how to convert 1.08 to a fraction... There is not much that can be done to figure out how to write 1.08 as a fraction, except to literally use what the decimal portion of your number, the .08, means. Since there are 2 digits in 08, the very last digit is the "100th" decimal place. So we can just say that .08 is the same as 08/100. The fraction 1 8/100 is not reduced to lowest terms. We can reduce this fraction to lowest terms by dividing both the numerator and denominator by 4. Why divide by 4? 4 is the Greatest Common Divisor (GCD) or Greatest Common Factor (GCF) of the numbers 8 and 100. So, this fraction reduced to lowest terms is 1 2/25. So your final answer is: 1.08 can be written as the fraction 1 2/25.
Every fraction is an equivalent fraction: each fraction in decimal form has an equivalent rational fraction as well as an equivalent percentage fraction.
A fraction that has a different sign to the first fraction.
To get from a percent to a decimal, simply move the "decimal point" over two places to the left. There is no defined (drawn) decimal point in the percent, but it is understood that it is after the 8, so it's also 8.0%. As a decimal, 8% is .08, now just write it as a fraction: 8/100, which can be simplified to 2/25
Divide the fraction by 100, and you will get the percentage of a fraction.