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Basic Subtraction Lesson 3: Number 3

Here's an easy example:

5
-
3
=
2
 
          
-
      
=
    
 
   Aqua Box   DarkViolet Box   Teal Box   Wheat Box   DarkSeaGreen Box  minus     Aqua Box   DarkViolet Box   Teal Box  equals     Wheat Box   DarkSeaGreen 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
 
                  
-
      
=
            
 
   RosyBrown Box   DarkBlue Box   OliveDrab Box   LimeGreen Box   MediumBlue Box   PowderBlue Box   DarkKhaki Box   Gold Box   SeaGreen Box  minus     RosyBrown Box   DarkBlue Box   OliveDrab Box  equals     LimeGreen Box   MediumBlue Box   PowderBlue Box   DarkKhaki Box   Gold Box   SeaGreen 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
=
 
                    
-
      
=
              
 
   DarkOrange Box   Blue Box   Cyan Box   DarkTurquoise Box   ForestGreen Box   Lavender Box   Goldenrod Box   MidnightBlue Box   Olive Box   SaddleBrown Box  minus     DarkOrange Box   Blue Box   Cyan Box  equals     DarkTurquoise Box   ForestGreen Box   Lavender Box   Goldenrod Box   MidnightBlue Box   Olive Box   SaddleBrown 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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