What is 1/4 of 66?
Often, in mathematics or everyday life, we need to find a fraction of a given number. For instance, how would you quickly calculate 1/4 of 66? We'll show you a straightforward method to achieve that.
How to calculate 1/4 of 66?
- Multiply the whole number by the numerator of the fraction: 66 × 1 = 66
- Divide this result by denominator of the fraction: 66/4 = 16.5
- Simplify by dividing both the numerator and denominator by their GCD (2):
- 66/2 = 33
- 4/2 = 2
- Which gives: 33/2
Since 33/2 is an improper fraction, the result could also be expressed as a mixed number: 16 1/2
How does it work?
The principle behind finding a fraction of a number, such as 1/4 of 66, is rooted in the method of cross-multiplication.
Consider the following proportion: (where x represents 1/4 of 66)
- Using the cross-multiplication method, multiply both numerators by their opposite denominators:
- Which gives:
- Divide both sides by 4 to isolate x:
- Which gives the result: (or )
Thus, 1/4 of 66 is equal to 33/2 (or 16.5 in its decimal form).