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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
 
      
-
  
=
    
 
   Brown Box   SeaGreen Box   LimeGreen Box  minus     Brown Box  equals     SeaGreen Box   LimeGreen 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
 
          
-
  
=
        
 
   Khaki Box   MidnightBlue Box   DarkOrchid Box   ForestGreen Box   OliveDrab Box  minus     Khaki Box  equals     MidnightBlue Box   DarkOrchid Box   ForestGreen Box   OliveDrab 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
=
 
                    
-
  
=
                  
 
   Khaki Box   MidnightBlue Box   DarkOrchid Box   ForestGreen Box   OliveDrab Box   Tan Box   Empty Box   BurlyWood Box   DodgerBlue Box   DarkGoldenrod Box  minus     Khaki Box  equals     MidnightBlue Box   DarkOrchid Box   ForestGreen Box   OliveDrab Box   Tan Box   Empty Box   BurlyWood Box   DodgerBlue Box   DarkGoldenrod 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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