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Basic Subtraction Lesson 4: Number 4

Here's an easy example:

5
-
4
=
1
 
          
-
        
=
  
 
   GreenYellow Box   SaddleBrown Box   MediumPurple Box   YellowGreen Box   Empty Box  minus     GreenYellow Box   SaddleBrown Box   MediumPurple Box   YellowGreen Box  equals     Empty 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
 
                      
-
        
=
              
 
   DarkViolet Box   Green Box   Khaki Box   SpringGreen Box   Plum Box   DarkGoldenrod Box   Purple Box   Goldenrod Box   DarkSeaGreen Box   Teal Box   MediumTurquoise Box  minus     DarkViolet Box   Green Box   Khaki Box   SpringGreen Box  equals     Plum Box   DarkGoldenrod Box   Purple Box   Goldenrod Box   DarkSeaGreen Box   Teal Box   MediumTurquoise 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
=
 
                        
-
        
=
                
 
   DarkOrchid Box   DarkMagenta Box   MediumVioletRed Box   Pink Box   Aqua Box   RoyalBlue Box   Peru Box   Tan Box   LimeGreen Box   BlueViolet Box   DarkKhaki Box   Cyan Box  minus     DarkOrchid Box   DarkMagenta Box   MediumVioletRed Box   Pink Box  equals     Aqua Box   RoyalBlue Box   Peru Box   Tan Box   LimeGreen Box   BlueViolet Box   DarkKhaki Box   Cyan 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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