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Basic Subtraction Lesson 4: Number 4

Here's an easy example:

5
-
4
=
1
 
          
-
        
=
  
 
   PowderBlue Box   OliveDrab Box   DarkCyan Box   Magenta Box   Blue Box  minus     PowderBlue Box   OliveDrab Box   DarkCyan Box   Magenta Box  equals     Blue Box

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


Here's another example:

11
-
4
=
7
 
                      
-
        
=
              
 
   GreenYellow Box   Green Box   LimeGreen Box   MediumTurquoise Box   Fuchsia Box   MediumOrchid Box   DarkMagenta Box   SpringGreen Box   Lavender Box   DarkOrchid Box   SkyBlue Box  minus     GreenYellow Box   Green Box   LimeGreen Box   MediumTurquoise Box  equals     Fuchsia Box   MediumOrchid Box   DarkMagenta Box   SpringGreen Box   Lavender Box   DarkOrchid Box   SkyBlue Box

We start with eleven boxes, take away four boxes, and now have seven boxes. We take away four boxes from our eleven boxes to get seven boxes.


Try this problem.

12
-
4
=
 
                        
-
        
=
                
 
   DarkGoldenrod Box   Aquamarine Box   Chartreuse Box   MediumPurple Box   Purple Box   DarkKhaki Box   Brown Box   BlueViolet Box   Olive Box   Pink Box   MediumSpringGreen Box   Tan Box  minus     DarkGoldenrod Box   Aquamarine Box   Chartreuse Box   MediumPurple Box  equals     Purple Box   DarkKhaki Box   Brown Box   BlueViolet Box   Olive Box   Pink Box   MediumSpringGreen Box   Tan Box

We start with twelve boxes, take away four boxes, and now have eight 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:

  4 - 4 =   0
  5 - 4 =   1
  6 - 4 =   2
  7 - 4 =   3
  8 - 4 =   4
  9 - 4 =   5
10 - 4 =   6
11 - 4 =   7
12 - 4 =   8
13 - 4 =   9
14 - 4 = 10
15 - 4 = 11
16 - 4 = 12


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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