Gerri is working on a project that needs to be halfway completed by Friday. So far, she has completed of the project. How much of the project does she have to finish by Friday?
You want the difference between 1/2 and 1/5. To find this express each fraction in terms of a common denominator. Here 10 is the least common denominator and 1/2 = 5/10 and 1/5 = 2/10, so the difference is 5/10 - 2/10 = 3/10. So she has to finish 3/10 by Friday.
You want the difference between 1/2 and 1/5. To find this express each fraction in terms of a common denominator. Here 10 is the least common denominator and 1/2 = 5/10 and 1/5 = 2/10, so the difference is 5/10 - 2/10 = 3/10. So she has to finish 3/10 by Friday.