Home      Site Map

Basic Subtraction Lesson 9: Number 9

Here's an easy example:

11
-
9
=
2
 
                      
-
                  
=
    
 
   Purple Box   DarkSlateBlue Box   BlueViolet Box   Green Box   ForestGreen Box   YellowGreen Box   CadetBlue Box   DarkCyan Box   Chartreuse Box   Magenta Box   Chocolate Box  minus     Purple Box   DarkSlateBlue Box   BlueViolet Box   Green Box   ForestGreen Box   YellowGreen Box   CadetBlue Box   DarkCyan Box   Chartreuse Box  equals     Magenta Box   Chocolate Box

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


Here's another example:

15
-
9
=
6
 
                              
-
                  
=
            
 
   Chocolate Box   DarkSeaGreen Box   GreenYellow Box   Indigo Box   Cyan Box   Empty Box   SaddleBrown Box   Coral Box   DarkOrchid Box   Violet Box   Khaki Box   Tan Box   SandyBrown Box   Maroon Box   DarkGreen Box  minus     Chocolate Box   DarkSeaGreen Box   GreenYellow Box   Indigo Box   Cyan Box   Empty Box   SaddleBrown Box   Coral Box   DarkOrchid Box  equals     Violet Box   Khaki Box   Tan Box   SandyBrown Box   Maroon Box   DarkGreen Box

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


Try this problem.

21
-
9
=
 
                                          
-
                  
=
                        
 
   Khaki Box   Tan Box   SandyBrown Box   Maroon Box   DarkGreen Box   DarkOliveGreen Box   SpringGreen Box   HotPink Box   MediumOrchid Box   Olive Box   DodgerBlue Box   Aquamarine Box   MediumSpringGreen Box   Aqua Box   MediumVioletRed Box   Wheat Box   LawnGreen Box   DeepPink Box   RosyBrown Box   DarkTurquoise Box   MediumBlue Box  minus     Khaki Box   Tan Box   SandyBrown Box   Maroon Box   DarkGreen Box   DarkOliveGreen Box   SpringGreen Box   HotPink Box   MediumOrchid Box  equals     Olive Box   DodgerBlue Box   Aquamarine Box   MediumSpringGreen Box   Aqua Box   MediumVioletRed Box   Wheat Box   LawnGreen Box   DeepPink Box   RosyBrown Box   DarkTurquoise Box   MediumBlue Box

We start with twenty-one boxes, take away nine boxes, and now have twelve 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:

  9 - 9 =   0
10 - 9 =   1
11 - 9 =   2
12 - 9 =   3
13 - 9 =   4
14 - 9 =   5
15 - 9 =   6
16 - 9 =   7
17 - 9 =   8
18 - 9 =   9
19 - 9 = 10
20 - 9 = 11
21 - 9 = 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.

Continue to Next Page