2
算一算
16- 3 =
12- 8 =
11- 7 =
15- 8 =
17- 8 =
15- 5 =
11- 9 =
13- 5 =
12- 7 =
11- 5 =
14- 6 =
11- 2 =
16- 9 =
15- 6 =
14- 5 =
18- 5 =
17- 4 =

1. $16 - 3 = 13$
2. $12 - 8 = 4$
3. $11 - 7 = 4$
4. $15 - 8 = 7$
5. $17 - 8 = 9$
6. $15 - 5 = 10$
7. $11 - 9 = 2$
8. $13 - 5 = 8$
9. $12 - 7 = 5$
10. $11 - 5 = 6$
11. $14 - 6 = 8$
12. $11 - 2 = 9$
13. $16 - 9 = 7$
14. $15 - 6 = 9$
15. $14 - 5 = 9$
16. $18 - 5 = 13$
17. $17 - 4 = 13$