Fill in the missing numbers in the boxes.

Here are the solutions for the missing numbers in the boxes:

1. To find the missing number, subtract N70 from N85.

   $$\text{N}85 - \text{N}70 = \text{N}15$$

   The missing number is $\boxed{\text{N}15}$.

2. To find the missing number, add N42 and N26.

   $$\text{N}42 + \text{N}26 = \text{N}68$$

   The missing number is $\boxed{\text{N}68}$.

3. To find the missing number, subtract N22 from N88.

   $$\text{N}88 - \text{N}22 = \text{N}66$$

   The missing number is $\boxed{\text{N}66}$.

4. To find the missing number, subtract $23 from$59. $\$59 - \$23 = \$36$ The missing number is \boxed{\36}$.

5. To find the missing number, add N25 and N25.

   $$\text{N}25 + \text{N}25 = \text{N}50$$

   The missing number is $\boxed{\text{N}50}$.

6. To find the missing number, subtract $30 from$60. $\$60 - \$30 = \$30$ The missing number is \boxed{\30}$.

7. To find the missing number, subtract $20 from$90. $\$90 - \$20 = \$70$ The missing number is \boxed{\70}$.

8. To find the missing number, add $35 and$30. $\$35 + \$30 = \$65$ The missing number is \boxed{\65}$.

9. To find the missing number, subtract N45 from N65.

   $$\text{N}65 - \text{N}45 = \text{N}20$$

   The missing number is $\boxed{\text{N}20}$.

10. To find the missing number, subtract N35 from N95.

    $$\text{N}95 - \text{N}35 = \text{N}60$$

    The missing number is $\boxed{\text{N}60}$.