AAAMath.com
Sorted by Grade Level
Contact AAA Math Contact AAA Math      Contact AAA Math Buy the AAA Math CD      AAA Math en Español Spanish version

Sorted by Subject

SubtractionLearn LearnTable of Contents Table of Contents
Practice PracticeNext Lesson Next Lesson
Play PlayPrevious Lesson Previous Lesson
Explore Explore Feedback Feedback

Practice Your Spelling List

States of the United States

Nations of the World

 

Choosing a Method of Subtraction

You know several methods of subtraction which are:

  • Mental Subtraction
  • Paper and Pencil
  • Calculator

You should choose the method that is easiest, fastest and most accurate. It is very valuable to become proficient in all methods. A calculator is easiest but often not the fastest way to subtract. Mental math is the fastest method but not always the easiest. Using paper and pencil is necessary on complex problems that require an exact answer.

Subtracting Numbers with a calculator

Subtracting numbers (for example 68 - 45 ) with a calculator involves several steps.

Enter the first number by pressing the 6 button and the 8 button

Enter the minus operation by pressing the button

Enter the number 45 by pressing the 4 button and the 5 button

Press the = button to make the calculator determine the answer.






Find the Difference between the two Numbers.

  -  






 


You have correct and   incorrect.  This is percent correct.

Return to Top


Play
PlayGameWhat is it?Best Score
How many correct answers can you get in 60 seconds?
Extra time is awarded for each correct answer. Play longer by getting more correct.
How fast can you get 20 more correct answers than wrong answers?

Sudoku

Timez Attack Multiplication Video Game

Return to Top

Math Lessons by Grade
Math Topics

Math Resources

Spelling Lessons by Grade

Vocabulary Lessons by Grade

Geography

WorldPlenty.com

Other Interests

Return to Top



Copyright © 2009 J. Banfill. All Rights Reserved. Legal Notice

Copyright (C) 2009 J. Banfill. All Rights Reserved.