One: 1.3 One fifth and nine fifths 2. One ninth 5 13 3. 1, 3, 5, 7, 9, 2, 4, 6, 8, 10, 2, 3, 5, 7, 4, 6, 8.

4.6、 12、 18、24、30、9、 18、27、 18

5. (1)15 62 30 (2) 40 6. Five eighths and seven seventeenth (minor problems)

8. 10 32 80 0.8 (zero point eight)

Two: B A C A B B

Okay？