Question

Complete the pattern.2.78, 4.03, 5.78, 8.03, 10.78,_____

Answer 1

The next number in the pattern would be 14.03.

To find this, note the differences found by subtracting each number from the number that comes after.

4.03 - 2.78 = 1.25

5.78 - 4.03 = 1.75

8.03 - 5.78 = 2.25

10.78 - 8.03 = 2.75

Since each difference goes up by .5 each time, we know we can add .5 to the last difference to find the newest one.

2.75 + .5 = 3.25

Now we have the difference, so we add that to the last number.

10.78 + 3.25 = 14.03