Unit Review: Skip-counting & patterns

N.1N.2N.3Find the rule and fill in the missing numbers.

1. 1
   $39,42,45,48,\boxed{},\boxed{}$
2. 2
   $30,35,40,\boxed{},50,\boxed{}$
3. 3
   $35,40,\boxed{},50,55,\boxed{}$
4. 4
   $250,275,300,\boxed{},\boxed{},375$
5. 5
   $15,24,\boxed{},42,\boxed{},60$
6. 6
   $42,49,56,\boxed{},\boxed{},77$
7. 7
   $57,46,35,\boxed{},\boxed{},2$
8. 8
   $4,14,24,34,\boxed{},\boxed{}$
9. 9
   $\begin{array}{cccccc}\text{In}& 13& 16& 19& 22& 25\\ \text{Out}& 4& & 10& & 16\end{array}$
10. 10
    $\begin{array}{cccccc}\text{In}& 11& 13& 15& 17& 19\\ \text{Out}& 7& 9& & 13& \end{array}$
11. 11
    $\begin{array}{cccccc}\text{In}& 6& 9& 12& 15& 18\\ \text{Out}& 11& 14& & & 23\end{array}$
12. 12
    $\begin{array}{cccccc}\text{In}& 1& 3& 5& 7& 9\\ \text{Out}& 10& & 14& 16& \end{array}$

N.1N.2N.3Find the rule and fill in the missing numbers.

1. 1$51,54$ (add 3)
2. 2$45,55$ (add 5)
3. 3$45,60$ (add 5)
4. 4$325,350$ (add 25)
5. 5$33,51$ (add 9)
6. 6$63,70$ (add 7)
7. 7$24,13$ (subtract 11)
8. 8$44,54$ (add 10)
9. 9$7,13$ (rule: subtract 9)
10. 10$11,15$ (rule: subtract 4)
11. 11$17,20$ (rule: add 5)
12. 12$12,18$ (rule: add 9)