3. Tell all you can about the relation of these units.
4. Unite units and tell what the sum equals.
5. Make statements like this: o less e equals b.
6. c can be separated into how many d's? into how many b's?
7. c can be separated into how many b's? What is the name of the largest unit that can be found in both c and d an exact number of times?
8. Each of the other units equals what part of c?
9. If b is 1, what is each of the other units?
10. If a is 1, what is each of the other units?
11. If b is 1, how many 1's are there in each of the other units?
12. If d is 1, how many 1's and parts of 1 in each of the other units?