Example:
Find the missing number: 4 + ? = 12
 Step 1: Start counting after 4 till we reach 12.
After 4 we have 5,6,7,8,9,10,11,12.
 Step 2: Count the number of numbers we have from 5 to 12.
Answer: 8
Directions: Find the missing number. Also write at least ten examples of your own.
