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Basic Subtraction Lesson 12: Number 12

Here's an easy example:

13
-
12
=
1
 
                          
-
                        
=
  
 
   Turquoise Box   Goldenrod Box   MediumVioletRed Box   DarkBlue Box   Pink Box   MediumSeaGreen Box   MediumBlue Box   Plum Box   ForestGreen Box   Olive Box   DarkGreen Box   Sienna Box   Aqua Box  minus     Turquoise Box   Goldenrod Box   MediumVioletRed Box   DarkBlue Box   Pink Box   MediumSeaGreen Box   MediumBlue Box   Plum Box   ForestGreen Box   Olive Box   DarkGreen Box   Sienna Box  equals     Aqua Box

We start with thirteen boxes, take away twelve boxex, and now have eleven boxes. We take away one box from our twelve boxes to get one box.


Here's another example:

16
-
12
=
4
 
                                
-
                        
=
        
 
   Wheat Box   Indigo Box   Peru Box   LimeGreen Box   Blue Box   Navy Box   DodgerBlue Box   SlateBlue Box   LawnGreen Box   DarkKhaki Box   DarkOrchid Box   SandyBrown Box   DarkMagenta Box   Green Box   DeepPink Box   MidnightBlue Box  minus     Wheat Box   Indigo Box   Peru Box   LimeGreen Box   Blue Box   Navy Box   DodgerBlue Box   SlateBlue Box   LawnGreen Box   DarkKhaki Box   DarkOrchid Box   SandyBrown Box  equals     DarkMagenta Box   Green Box   DeepPink Box   MidnightBlue Box

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


Try this problem.

22
-
12
=
 
                                            
-
                        
=
                    
 
   Cyan Box   Teal Box   DarkViolet Box   Magenta Box   MediumSlateBlue Box   Fuchsia Box   SpringGreen Box   BurlyWood Box   Coral Box   CadetBlue Box   DarkSlateBlue Box   Yellow Box   DarkTurquoise Box   GreenYellow Box   Khaki Box   MediumSpringGreen Box   Violet Box   YellowGreen Box   DarkOliveGreen Box   DarkOliveGreen Box   DarkOliveGreen Box   DarkOliveGreen Box  minus     Cyan Box   Teal Box   DarkViolet Box   Magenta Box   MediumSlateBlue Box   Fuchsia Box   SpringGreen Box   BurlyWood Box   Coral Box   CadetBlue Box   DarkSlateBlue Box   Yellow Box  equals     DarkTurquoise Box   GreenYellow Box   Khaki Box   MediumSpringGreen Box   Violet Box   YellowGreen Box   DarkOliveGreen Box   DarkOliveGreen Box   DarkOliveGreen Box   DarkOliveGreen Box

We start with twenty-two boxes, take away twelve 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:

12 - 12 =   0
13 - 12 =   1
14 - 12 =   2
15 - 12 =   3
16 - 12 =   4
17 - 12 =   5
18 - 12 =   6
19 - 12 =   7
20 - 12 =   8
21 - 12 =   9
22 - 12 = 10
23 - 12 = 11
24 - 12 = 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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