PercentFor example, a quarter (25 cents) is 25 percent of a dollar (100 cents). The 25 above is the numerator of a fraction whose denominator is 100. So, the fraction 25/100 is 25 percent, sometimes written as 25%. Probabilities are often expressed in percents. Click here to see how to convert between fractions, decimals and percents. Now, here's a problem for you: I gave half my marbles to Vic and half of what remained to Nancy. What percent of my marbles do I still have? _____% |