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Basic Subtraction Lesson 3: Number 3

Here's an easy example:

5
-
3
=
2
 
          
-
      
=
    
 
   DarkTurquoise Box   HotPink Box   OliveDrab Box   Thistle Box   ForestGreen Box  minus     DarkTurquoise Box   HotPink Box   OliveDrab Box  equals     Thistle Box   ForestGreen 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
 
                  
-
      
=
            
 
   DodgerBlue Box   CadetBlue Box   MediumBlue Box   Pink Box   SeaGreen Box   SteelBlue Box   SandyBrown Box   Indigo Box   Plum Box  minus     DodgerBlue Box   CadetBlue Box   MediumBlue Box  equals     Pink Box   SeaGreen Box   SteelBlue Box   SandyBrown Box   Indigo Box   Plum 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
=
 
                    
-
      
=
              
 
   MediumSeaGreen Box   Teal Box   DarkKhaki Box   Green Box   Lavender Box   MidnightBlue Box   Yellow Box   Olive Box   Aqua Box   CornflowerBlue Box  minus     MediumSeaGreen Box   Teal Box   DarkKhaki Box  equals     Green Box   Lavender Box   MidnightBlue Box   Yellow Box   Olive Box   Aqua Box   CornflowerBlue 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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