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Basic Subtraction Lesson 3: Number 3

Here's an easy example:

5
-
3
=
2
 
          
-
      
=
    
 
   Orchid Box   BurlyWood Box   MediumSpringGreen Box   Magenta Box   Teal Box  minus     Orchid Box   BurlyWood Box   MediumSpringGreen Box  equals     Magenta Box   Teal Box

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


Here's another example:

9
-
3
=
6
 
                  
-
      
=
            
 
   DeepSkyBlue Box   MediumVioletRed Box   DarkSeaGreen Box   Coral Box   CornflowerBlue Box   Cyan Box   Goldenrod Box   Peru Box   Wheat Box  minus     DeepSkyBlue Box   MediumVioletRed Box   DarkSeaGreen Box  equals     Coral Box   CornflowerBlue Box   Cyan Box   Goldenrod Box   Peru Box   Wheat Box

We start with nine boxes, take away three boxes, and now have six boxes. We take away three boxes from our nine boxes to get six boxes.


Try this problem.

10
-
3
=
 
                    
-
      
=
              
 
   SpringGreen Box   HotPink Box   Sienna Box   DarkOliveGreen Box   Green Box   MediumSeaGreen Box   DarkGoldenrod Box   Aqua Box   Chartreuse Box   MediumPurple Box  minus     SpringGreen Box   HotPink Box   Sienna Box  equals     DarkOliveGreen Box   Green Box   MediumSeaGreen Box   DarkGoldenrod Box   Aqua Box   Chartreuse Box   MediumPurple Box

We start with ten boxes, take away three boxes, and now have seven 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:

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