Find The Rule of a Number Pattern
Here we will learn how to find the rule of a number pattern.
Sometimes the set of numbers have something common in them. They follow a pattern or rule.
3 6 9 12 15 18 21 24
In the above number pattern, we have to skip count in three (add 3) to continue the sequence. So, to obtain the next number all you have to do is add 3 to the previous number.
Hence the next number will be 27
Questions and Answers on Find The Rule of a Number Pattern
1. Study the pattern and find the rule. One has been done for you.
Multiply by 2
|
2 |
2 |
|
3 |
6 |
|
5 |
10 |
|
7 |
14 |
Answer:
1. (ii) Add 3
(iii) Odd numbers
2. Study the pattern and follow the rule to complete them.
1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 = 55
11 + 12 + 13 + 14 + 15 + 16 + 17 + 18 + 19 + 20 = 155
21 + 22 + 23 + 24 + 25 + 26 + 27 + 28 + 29 + 30 = 255
31 + 32 + 33 + 34 + 35 + 36 + 37 + 38 + 39 + 40 = _________
Answer:
2. 355
3. Complete the following growing or reducing number pattern. Also write rule.
(i) 15, 30, 45, 60, 75, _____, _____
Rule: ______________________________________________
(ii) 1, 2, 3, 4, 5, 6, _____, _____
Rule: ______________________________________________
(ii) 90, 80, 70, 60, 50, _____, _____
Rule: ______________________________________________
Answer:
3. (i) 90, 105
Rule: Table of 15
(ii) 7, 8
Rule: Counting numbers
(ii) 40, 30
Rule: -10
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