The fraction 5 divided by 1/2 looks like . It is difficult to divide with fractions but can be easier if you remember that dividing by a fraction is the same as multiplying by its reciprocal. A number's reciprocal is that number flipped by switching the numerator and the denominator. So, 3/5 becomes 5/3, and 1/2 becomes 2/1. Another way to state 2/1 is simply 2. Therefore, is really 5 * 2. 5 times 2 is 10, which is your answer.
