Decimal Patterns
Pattern Rule
Next 3 Numbers
Expressions
100

5.6, 5.5, 5.4

-0.1

100

1, 3, 5, 7

start at 1 and add 2 each time

100

10, 20, 30, 40

50, 60, 70

100

5, 6, 7, 8, 9

t + 4

200

3.5, 5.0, 6.5

+1.5

200

2, 3, 5, 8, 12

start at 2 and add by 1 more each time

200

21, 28, 35, 42

49, 56, 63

200

18, 19, 20, 21, 22

t + 17

300

2.15, 2.30, 2.45

+0.15

300

100, 99, 97, 94, 90

start at 100 and - by one more each time

300

8, 16, 13, 26, 23

46, 43, 86

300

6, 7, 8, 9, 10

t + 5 

400

35.67, 34.42, 33.17

-1.25

400

4, 12, 9, 27, 24

start at 4 and then x3, -3

400

4, 20, 15, 75

70, 350, 345

400

9, 10, 11, 12, 13

t + 8

500

1.32, 3.73, 6.14

+2.41

500

80, 20, 16, 4, 0

start at 80 and then divide by 4 and minus 4
500

6, 18, 16, 48, 46

138, 136, 408

500

4, 5, 6, 7, 8

t + 3