Number Patterns
Rules for Patterns
Rounding
Addition
Subtraction
100
5, 10, 15, ____
20
100

25, 30, 35, 40

Adding by 5

100
Round 59 to the nearest 10
60
100
15+24
39
100
59-26
33
200
12, 15, 18, _____
21
200

27, 30, 33, 36

Adding by 3

200
Round 283 to the nearest hundred
300
200

93+28

121

200
64-29
35
300
22, 20, 18, _____
16
300

28, 26, 24, 22, 20

Subtracting by 2

300
Round 653 to the nearest hundred
700
300
689+248
937
300
987-123
864
400
50, 45, 40, ______
35
400
56, 60, 64, 68
Adding by 4
400

Round 638 to the nearest ten.

640

400
864+678
1,542
400
812-346
466
500
97, 94, 91, 88, ____
85
500

42, 39, 36, 33

Subtracting by 3

500
Round 4,583 to the nearest thousand.
5,000
500
3,679+7,564
11,243
500
900-364
536
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