What is 8/8 of 91?
Often, in mathematics or everyday life, we need to find a fraction of a given number. For instance, how would you quickly calculate 8/8 of 91? We'll show you a straightforward method to achieve that.
How to calculate 8/8 of 91?
- Multiply the whole number by the numerator of the fraction: 91 × 8 = 728
 - Divide this result by denominator of the fraction: 728/8 = 91
 - Simplify by dividing both the numerator and denominator by their GCD (8):
                    
- 728/8 = 91
 - 8/8 = 1
 
 - Which gives: 91/1
 
How does it work?
The principle behind finding a fraction of a number, such as 8/8 of 91, is rooted in the method of cross-multiplication.
Consider the following proportion: (where x represents 8/8 of 91)
- Using the cross-multiplication method, multiply both numerators by their opposite denominators:
 - Which gives:
 - Divide both sides by 8 to isolate x:
 - Which gives the result: (or )
 
Thus, 8/8 of 91 is equal to 91/1 (or 91 in its decimal form).