Exploring Input and Output Tables for 4th Graders

What is the purpose of an input-output table?

• To show a pattern between input and output numbers.

• To list random numbers.

• To solve algebraic equations.

• To compare two unrelated sets of data.

What must a rule for an input-output table do?

• Only work for the first pair of numbers.

• Work for each pair of numbers in the table.

• Change with each new pair of numbers.

• Be different for each table.

If the input is 2 and the output is 4, which operation could be part of the rule?

• Add 4

• Multiply by 2

• Subtract 2

• Divide by 2

Given the rule 'output = input * 2', what is the output if the input is 3?

• 9

• 5

• 6

• 8

If the rule is 'output = input * 3', what is the output for an input of 4?

• 8

• 12

• 7

• 16

Using the rule 'output = input * 3', what is the output for an input of 7?

• 24

• 10

• 21

• 14

What should you consider if the numbers in the table are getting bigger?

• Subtracting or dividing

• Adding or multiplying

• Only adding

• Only multiplying

If the numbers in the table are getting smaller, which operations might you use?

• Only dividing

• Only subtracting

• Subtracting or dividing

• Adding or multiplying

Why is it important to check the rule for each pair of numbers in the table?

• To make the table more complex.

• To find new rules.

• To ensure the rule works consistently.

• To change the rule for each pair.

What is the first step in figuring out the rule for an input-output table?

• Ignore the input numbers.

• Check if the numbers are getting bigger or smaller.

• Guess the rule.

• Write down random numbers.