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Basic Subtraction Lesson 4: Number 4

Here's an easy example:

5
-
4
=
1
 
          
-
        
=
  
 
   DodgerBlue Box   MediumSeaGreen Box   HotPink Box   CadetBlue Box   SteelBlue Box  minus     DodgerBlue Box   MediumSeaGreen Box   HotPink Box   CadetBlue Box  equals     SteelBlue 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
 
                      
-
        
=
              
 
   Sienna Box   DarkOrange Box   DarkSeaGreen Box   Navy Box   LawnGreen Box   Brown Box   SlateBlue Box   DarkViolet Box   YellowGreen Box   Teal Box   ForestGreen Box  minus     Sienna Box   DarkOrange Box   DarkSeaGreen Box   Navy Box  equals     LawnGreen Box   Brown Box   SlateBlue Box   DarkViolet Box   YellowGreen Box   Teal Box   ForestGreen 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
=
 
                        
-
        
=
                
 
   Magenta Box   Chocolate Box   SeaGreen Box   DarkTurquoise Box   Goldenrod Box   GreenYellow Box   Lavender Box   Cyan Box   CornflowerBlue Box   MediumTurquoise Box   Turquoise Box   MediumSpringGreen Box  minus     Magenta Box   Chocolate Box   SeaGreen Box   DarkTurquoise Box  equals     Goldenrod Box   GreenYellow Box   Lavender Box   Cyan Box   CornflowerBlue Box   MediumTurquoise Box   Turquoise Box   MediumSpringGreen 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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