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Basic Subtraction Lesson 10: Number 10

Here's an easy example:

12
-
10
=
2
 
                        
-
                    
=
    
 
   Fuchsia Box   PowderBlue Box   RosyBrown Box   Lavender Box   GreenYellow Box   SkyBlue Box   Gold Box   SaddleBrown Box   RoyalBlue Box   Turquoise Box   Wheat Box   Maroon Box  minus     Fuchsia Box   PowderBlue Box   RosyBrown Box   Lavender Box   GreenYellow Box   SkyBlue Box   Gold Box   SaddleBrown Box   RoyalBlue Box   Turquoise Box  equals     Wheat Box   Maroon Box

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


Here's another example:

16
-
10
=
6
 
                                
-
                    
=
            
 
   MediumTurquoise Box   Navy Box   HotPink Box   Yellow Box   SlateBlue Box   CadetBlue Box   Indigo Box   LimeGreen Box   DarkViolet Box   MediumOrchid Box   BlueViolet Box   Aquamarine Box   Violet Box   DarkOrange Box   Magenta Box   Khaki Box  minus     MediumTurquoise Box   Navy Box   HotPink Box   Yellow Box   SlateBlue Box   CadetBlue Box   Indigo Box   LimeGreen Box   DarkViolet Box   MediumOrchid Box  equals     BlueViolet Box   Aquamarine Box   Violet Box   DarkOrange Box   Magenta Box   Khaki Box

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


Try this problem.

20
-
10
=
 
                                        
-
                    
=
                    
 
   Cyan Box   MediumBlue Box   Coral Box   SpringGreen Box   DeepPink Box   Plum Box   Green Box   DarkTurquoise Box   Teal Box   ForestGreen Box   SandyBrown Box   Brown Box   Purple Box   DodgerBlue Box   Tan Box   Peru Box   DarkGoldenrod Box   Sienna Box   MediumSeaGreen Box   Chartreuse Box  minus     Cyan Box   MediumBlue Box   Coral Box   SpringGreen Box   DeepPink Box   Plum Box   Green Box   DarkTurquoise Box   Teal Box   ForestGreen Box  equals     SandyBrown Box   Brown Box   Purple Box   DodgerBlue Box   Tan Box   Peru Box   DarkGoldenrod Box   Sienna Box   MediumSeaGreen Box   Chartreuse Box

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

10 - 10 =   0
11 - 10 =   1
12 - 10 =   2
13 - 10 =   3
14 - 10 =   4
15 - 10 =   5
16 - 10 =   6
17 - 10 =   7
18 - 10 =   8
19 - 10 =   9
20 - 10 = 10
21 - 10 = 11
22 - 10 = 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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