1. 
Skipcount by 3's.
18, 21, 24, _____, _____, _____ 

2. 
Skipcount by 3's.
37, 34, _____, 28 

3. 
Skipcount by 3's.
29, 32, 35, _____, _____ 

4. 
Skipcount by 3's.
43, 40, 37, _____, _____ 

5. 
* This is a premade sheet. Use the link at the top of the page for a printable page. 

6. 
* This is a premade sheet. Use the link at the top of the page for a printable page. 

7. 
Skipcount by 3's.
12, 15, 18, _____, _____, _____ 

8. 
Skipcount by 3's.
19, 22, _____, 28 

9. 
Skipcount by 3's.
9, 12, 15, 18, _____ 

10. 
Skipcount by 3's.
34, 31, _____, _____, _____ 

11. 
Skipcount by 3's.
45, 42, _____, _____ 

12. 
Skipcount by 3's.
21, 24, 27, 30, _____ 

13. 
Skipcount by 3's.
34, 31, 28, _____ 

14. 
Skipcount by 3's.
24, 27, _____, _____ 

15. 
Skipcount by 3's.
35, 38, _____, _____ 

16. 
Skipcount by 3's.
29, 26, 23, _____, _____ 

17. 
Skipcount by 3's.
26, 23, 20, _____, _____ 

18. 
Skipcount by 3's.
17, 14, 11, _____ 
