
Method:
What is the missing number: 120, 170, 220, ___ Look at the numbers in the above sequence. Here the difference between one number to the next is 50, therefore, it is skip counting by 50. That is, to each number we have to add 50 to get the next number.
In the above example, Directions: Find the missing number. Also write at least 10 examples of your own. 