6. In the last two months?
7. From the time it was born till it was 6 months old?
C
1. Helen's exact average for December was 871⁄3. Kate's was 841⁄2. How much higher was Helen's than Kate's?
871⁄3
841⁄2
———
How do you think of 1⁄2 and 1⁄3?
How do you think of 12⁄6?
How do you change the 4?
2. Find the exact average for each girl in the following list. Write the answers clearly so that you can see them easily. You will use them in solving problems 3, 4, 5, 6, 7, and 8.