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How do you find missing elements, or step, in a pattern?
For example:
Find the 9th number: 3, 8, 13, 18…..
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In this lesson you will learn about finding missing elements in growing patterns by using a
table.
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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
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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
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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
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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
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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
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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
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In this lesson you learned about finding missing elements
in patterns by using a table.
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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
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Let’s ReviewExtension Activities
Find the 7th number.
7, 14, 21, 28…
Describe how you solved for the 7th place number.
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Let’s ReviewExtension Activities
Find the 11th number in this pattern.6, 11, 16, 21…
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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