Grade 4 - Progress in Mathematics

Functions

14-3

Complete each function table.

The table at the right is called

a function table.

For each input number, or numbers that

you put into the table, there is only one

output. You can find the output number

by following the rule.

The input is 12. What is the output?

Input Rule Output

12 
 3  36

The output is 36.

What is the rule, or function, for this

function table?

Think how each input is related to its output.

40  4  10 32  4  8

28  4  7 20  4  5

The rule is  4.

Input Output

26

4 12

5 15

8 24

12?

Rule:
 3

Input Output

40 10

32 8

28 7

20 5

Rule:?

4 11

8?

25?

42?

Input Output

Rule: 7

12?

20?

45?

63?

Input Output

Rule: 11

250?

210?

180?

100?

Input Output

Rule: 2

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