How do you find missing elements, or step, in a pattern?

For example:

Find the 9th number: 3, 8, 13, 18…..

In this lesson you will learn about finding missing elements in growing patterns by using a

table.

Let’s ReviewLet’s Review

Steps and Rules

2, 4, 6, 8…..

+ 2 + 2 + 2 + 2

Step 1

Step 2

Step 3

Step 4

Step 9

RULE

Let’s ReviewA Common Mistake

When finding missing numbers in a pattern, don’t just look for the next

number in the sequence.

3, 6, 9, 12 ...

+ 3 + 3 + 3 + 3

Let’s ReviewCore LessonUse a table to check for the pattern’s

rule.

3, 6, 9, 12 ...

+ 3 + 3 + 3 + 3

Step 1

Step 2

Step 3

Step 4

Step 5

Step 6

Step 7

Step 8

3 6 9 12

2x3 3x3 4x31x3

Step 1

RULE 8x3

24

Let’s ReviewCore Lesson

Find the the 9th number:

3, 8, 13, 18…..

Step 1

Step 2

Step 3

Step 4

Step 5

Step 6

Step 9

3 8 13 18

RULE 3+5

+ 5 + 5

8+5

+ 5

13+5

+ 5Step 1

Let’s ReviewCore Lesson

3, 8, 13, 18…

3 8 13 18

+ 5 + 5 + 5 + 5

-2 -2 -2 -2 -2

(2x5)-2(1x5)-2 (3x5)-2

Let’s ReviewCore Lesson

Find the the 9th number:

3, 8, 13, 18…..Step

1Step

2Step

3Step

4Step

5Step

6Step

9

3 8 13 18

RULE

23

(2x5)-2 (3x5)-2 (4x5)-2 (5x5)-2 (9x5)-2

43

(1x5)-2

In this lesson you learned about finding missing elements

in patterns by using a table.

Let’s ReviewGuided Practice

+6+6+6

Find the 8th Number:6, 12, 18, 24…

Step 1

Step 2

Step 3

Step 4

Step 5

Step 6

Step 7

Step 8

6 12 18 24

+6

1x6 2x6 3x6 4x6 8x6

48

48

Let’s ReviewExtension Activities

Find the 7th number.

7, 14, 21, 28…

Describe how you solved for the 7th place number.

Let’s ReviewExtension Activities

Find the 11th number in this pattern.6, 11, 16, 21…

Let’s ReviewQuick Quiz

What is the 8th number in this pattern? 2, 4, 6, 8…A) 10 B) 16 C) 20 D) 21

What is the 10th number in this pattern? 10, 15, 20, 25 A) 100 B) 70 C) 35 D)55