Write and solve elapsed time problems:

General instructions: you will write 9 word problems, and you will show how to solve each of the problems using a number line. At the end, you will have 9 problems and 9 number line/time line solutions.

1. Write an a. easy, b. medium and a c. hard problem whose structure is: given the start time and elapsed time, find the end time.

2. Write an a. easy, b. medium and a c. hard problem whose structure is: given the start time and end time, find the elapsed time.

3. Write an a. easy, b. medium and a c. hard problem whose structure is: given the end time and elapsed time, find the start time.