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Basic Subtraction Lesson 1: Number 1

Welcome to Basic Subtraction. In this unit, you will learn how to subtract numbers from one to twelve and also zero. FoxyMath wishes you success!

Here's an easy example:

3
-
1
=
2
 
      
-
  
=
    
 
   Olive Box   Pink Box   Yellow Box  minus     Olive Box  equals     Pink Box   Yellow Box

We start with three boxes, take away one box, and now have two boxes. We take away one box from our three boxes to get two boxes.


Here's another example:

5
-
1
=
4
 
          
-
  
=
        
 
   Orchid Box   Turquoise Box   MediumVioletRed Box   Khaki Box   SpringGreen Box  minus     Orchid Box  equals     Turquoise Box   MediumVioletRed Box   Khaki Box   SpringGreen Box

We start with five boxes, take away one box, and now have four boxes. We take away one box from our five boxes to get four boxes.


Try this problem.

10
-
1
=
 
                    
-
  
=
                  
 
   Orchid Box   Turquoise Box   MediumVioletRed Box   Khaki Box   SpringGreen Box   Cyan Box   Gold Box   Violet Box   DarkSlateBlue Box   Chocolate Box  minus     Orchid Box  equals     Turquoise Box   MediumVioletRed Box   Khaki Box   SpringGreen Box   Cyan Box   Gold Box   Violet Box   DarkSlateBlue Box   Chocolate Box

We start with ten boxes, take away one box, and now have nine boxes.


In order to do basic subtraction, you must memorize some equations but fear not: FoxyMath will help you! When you are finished with this lesson, you will know the following equations:

  1 - 1 =   0
  2 - 1 =   1
  3 - 1 =   2
  4 - 1 =   3
  5 - 1 =   4
  6 - 1 =   5
  7 - 1 =   6
  8 - 1 =   7
  9 - 1 =   8
10 - 1 =   9
11 - 1 = 10
12 - 1 = 11


The following exercise will help you learn the above equations and what they mean. Please take your time: take whatever time you need to learn the material.

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