1. A class of 20 students took a 10-problem quiz. Their results were as follows. What is the class average? 2. What is the average of the top six scores in Exercise 159? 3. It is possible to picture...

1. A class of 20 students took a 10-problem quiz. Their results were as follows.

What is the class average?

2. What is the average of the top six scores in Exercise 159?

3. It is possible to picture an improper fraction using unit regions.

 4. The fraction
 written as a mixed number is

5. The whole number 1 can also be written as a proper fraction.