Back To Course

3rd-5th Grade Math: Practice & Review37 chapters | 252 lessons

Watch short & fun videos
**
Start Your Free Trial Today
**

Instructor:
*Jaimee Arnold*

Jaimee has worked in elementary school and has her Master's +30.

In this lesson, you'll find out what an input-output table is and how to use one. You'll also learn about the vocabulary used with the table and how to complete a subtraction input/output table.

An **input-output** table is a table that shows the relationship between sets of numbers that always follow the same rule. Input-output tables can be very complex (with several math operations) or simple (with just one math operation). In some problems, the rule for the input-output table is given, while in other problems, you'll need to figure out the math rule for the input-output table. In this lesson, we will focus on working with subtraction to solve the input-output table.

The rule for the input-output table must be the same for all the number sets that are included in the table. If the rule does not work for each set of numbers, it is not the correct rule for the table.

Before you learn how to solve the input-output table, you'll need to learn some new vocabulary words.

**Input-output table**: This is the actual table that has the sets of numbers on it. This table is also known as a function table.**Input**is the number in the first column of the table. If given a rule, this is the number that you start with. You can also use this number to figure out what the rule is if it is not given.**Output**is the end number or the answer to the math equation.- The
**rule**is the math operation that needs to be followed to get the correct sets of numbers for your input-output table. Take a look at the illustration to see how the table is set up.

When you first look at an input-output table, you'll notice that the rule is usually at the top of the table, as shown in the example problem below. In this case, the rule is 'subtract 200.'

The rule is very important and is the same for each row in the table. Because the rule is so important, the first thing you need to do is circle it. Next, look at the first row in your table. Take the first input number and subtract the rule. In this example, your number sentence would be: 900 - 200 = ? The answer to this problem will be the output number.

Follow the same steps for the remaining rows of the table. Remember that the rule stays the same for the entire input-output table. Use the following picture to see how the completed table should look. The output numbers for this table are 700 and 300.

**Input-output tables**, sometimes called function tables, show the relationship between a set of numbers. The relationship is a **rule** or mathematical operation that is the same for each row in each table. The **input** number can be found in the first column of the table, while the **output** is the answer to the math problem.

If a rule is not given, you'll need to study the input and output number to decide what mathematical operation to use. In this lesson, we focused on using subtraction. The rule must work for each row of the table and always goes from input number to output number.

To unlock this lesson you must be a Study.com Member.

Create your account

Already a member? Log In

BackDid you know… We have over 95 college courses that prepare you to earn credit by exam that is accepted by over 2,000 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.

To learn more, visit our Earning Credit Page

Not sure what college you want to attend yet? Study.com has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.

- Business Intelligence 101: Intro to Business Intelligence
- Finding & Retaining Talent in an Agile Organization
- Cultural Agility for Organizations
- Psychology 306: Advanced Abnormal Psychology
- Computer Science 108: Introduction to Networking
- Developing Agile Employees
- Data Challenges in Business Intelligence
- Agile Talent Retention Strategies
- Understanding Cultural Agility in Organizations
- Intro to Agile Organizations
- Study.com CLEP Scholarship for Military Members
- Study.com Scholarship for Texas Students & Prospective Teachers
- Study.com Scholarship for Florida Students & Prospective Teachers
- What are TExMaT Exams?
- What is the Florida Teacher Certification Examination (FTCE)?
- Study.com TExES Scholarship: Application Form & Information
- Study.com FTCE Scholarship: Application Form & Information

- Methods for Teaching Math Operations
- What are Factors & Multiples?
- Using Visuals to Solve a Math Problem
- Search & Seizure: Definition, Laws & Rights
- Connecting to Information Resources Beyond the School Library
- Program Benefit Analysis: Research Methods & Development
- Russia After Communism
- Reducing Prejudice: Techniques in Social Psychology
- Quiz & Worksheet - Motor Vehicle Theft Law
- Quiz & Worksheet - Using Data in Picture Graphs
- Quiz & Worksheet - Babylon Revisited
- Quiz & Worksheet - Identity Covering in the Workplace
- Quiz & Worksheet - Autopsy Procedure & Results
- International Law & Global Issues Flashcards
- Foreign Policy, Defense Policy & Government Flashcards

- TEAS Test Study Guide
- Geometry 101: Intro to Geometry
- 11th Grade English Textbook
- MTTC Early Childhood Education: Practice & Study Guide
- GACE Middle Grades Reading: Practice & Study Guide
- OAE Middle Grades ELA: Examining Literary Works
- Chromosomes
- Quiz & Worksheet - Converting 1 Million Pennies to Dollars
- Quiz & Worksheet - Facultative Aerobes
- Quiz & Worksheet - Understanding Political Science
- Quiz & Worksheet - Pathogenesis
- Quiz & Worksheet - Replication Bubble

- Informative Speaking: Purpose and Types
- Rontu in Island of the Blue Dolphins
- Common Core State Standards in Nevada
- Education Advocacy Groups & Organizations
- The Hobbit Lesson Plan
- Community College Teaching Jobs
- Alternative Teacher Certification in Colorado
- DSST Test Dates
- Fun Math Games for 3rd Grade
- Alternative Teacher Certification in Alabama
- What is a Lexile Score?
- How Hard is it to Learn French?

Browse by subject