Practice!

Sample Problem

Complete the number pattern:

404, 405, , 407, , 409

Solution

To find the pattern, we

·  Determine if pattern is increasing or decreasing

·  Find the difference between 2 consecutive numbers

·  Apply the difference to find the unknown numbers.

Each number is 1 more than the number before.

The number pattern is:

404,405, 406, 407, 408, 409.