How do you find the rule in a reducing pattern?
For example:
Find the Rule. What are the next 4 steps: 50, 40, 31, 23, 16…..
In this lesson you will learn about determining the rule in
patterns that decrease by using a table.
Let’s ReviewLet’s Review
Steps and Rules
15, 13, 11, 9…..
- 2 - 2 - 2 - 2
Step 1
Step 2
Step 3
Step 4
Step 7
RULE
Let’s ReviewA Common Mistake
When finding the rule in a pattern, don’t assume all patterns increase.
18, 15, 12, 9 ...
- 3 - 3 - 3 - 3
Let’s ReviewCore LessonUse a table to check for the rule being
used on the pattern.
18, 15, 12, 9 ...
- 3 - 3 - 3 - 3
Step 1
Step 2
Step 3
Step 4
Step 5
Step 6
Step 7
18 15 12 9
-3 -3 -3-3
Step 1
RULE -3 -3 -3
6 3 0
Let’s ReviewCore Lesson
Find the rule: 50, 40, 31, 23, 16…
Step 1
Step 2
Step 3
Step 4
Step 5
Step 6
Step 7
Step 8
50 40 31 23 16
RULEStep1 -10
- 10 - 9 - 8 - 7
Step2 -9 Step3 -8 Step4 -7 Step5 -6 Step6 -5 Step7 -4
10 5 1
As the step increases, the amount subtracted reduces.
In this lesson you learned about finding the rule for
decreasing patterns by using a table.
Let’s ReviewGuided Practice
Find the rule. Find the next 3 numbers33, 28, 23, 18…..
Step 1
Step 2
Step 3
Step 4
Step 5
Step 6
Step 7
33 28 23 18
RULE
- 5 - 5 - 5 - 5
3
step1-5 step2-5 step3-5 step4-5 step5-5
8
step6-5
13
Let’s ReviewExtension Activities
Find the 7th number.
50, 48, 46, 44…
Describe how you solved for the 7th step number.
Let’s ReviewExtension Activities
Find the next four numbers in the pattern.42, 36, 30, 24…
Let’s ReviewQuick Quiz
What is the the next number in the pattern? 12, 10, 8, 6…A) 2 B) 16 C) 20 D) 4
What are the next two numbers in this pattern? 100, 90, 81, 73…. A) 70, 80… B) 66, 65… C) 66, 60 D)55, 20
Top Related