• A function machine uses a rule to change numbers.  You put a number into the machine. 

 

  • The machine uses the rule to change the number.  The changed number comes out of the machine.

Example:

4           7

Let's Practice!

 
1.  Solve each "out" number.

 
in
out
3
  
5
  
8
  
9
  

 
2. Solve each "in" number.  
 
out
 
6
 
16
 
11
 
10

 
3. Complete the chart.  
 
in
out
 
4
12
  
 
7
9
  

 
4. Find the rule.  
 
in
out
6
2
10
6
16
12
8
4

 

 

 

 Remember:

Apply the rule to each number and record it on the chart.

Click on the machine to review the lesson.

  
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Created by Stacy Dawson
Copyright © 2001-07 Oswego City School District
Function Machine taken from Everyday Mathematics Program