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Basic Subtraction Lesson 12: Number 12

Here's an easy example:

13
-
12
=
1
 
                          
-
                        
=
  
 
   Gold Box   DeepPink Box   SlateBlue Box   ForestGreen Box   SandyBrown Box   CornflowerBlue Box   MidnightBlue Box   Cyan Box   MediumPurple Box   RosyBrown Box   Sienna Box   DarkSeaGreen Box   Teal Box  minus     Gold Box   DeepPink Box   SlateBlue Box   ForestGreen Box   SandyBrown Box   CornflowerBlue Box   MidnightBlue Box   Cyan Box   MediumPurple Box   RosyBrown Box   Sienna Box   DarkSeaGreen Box  equals     Teal 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
 
                                
-
                        
=
        
 
   Aqua Box   DarkOrange Box   Aquamarine Box   Fuchsia Box   HotPink Box   DarkViolet Box   YellowGreen Box   Indigo Box   DarkOliveGreen Box   MediumAquamarine Box   Turquoise Box   DarkBlue Box   DarkMagenta Box   Peru Box   MediumTurquoise Box   Tan Box  minus     Aqua Box   DarkOrange Box   Aquamarine Box   Fuchsia Box   HotPink Box   DarkViolet Box   YellowGreen Box   Indigo Box   DarkOliveGreen Box   MediumAquamarine Box   Turquoise Box   DarkBlue Box  equals     DarkMagenta Box   Peru Box   MediumTurquoise Box   Tan 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
=
 
                                            
-
                        
=
                    
 
   DarkKhaki Box   Yellow Box   Chocolate Box   Green Box   Violet Box   DarkCyan Box   MediumSlateBlue Box   Olive Box   Thistle Box   MediumSpringGreen Box   DarkSlateBlue Box   Maroon Box   SpringGreen Box   Chartreuse Box   SteelBlue Box   SeaGreen Box   MediumBlue Box   Orchid Box   SkyBlue Box   SkyBlue Box   SkyBlue Box   SkyBlue Box  minus     DarkKhaki Box   Yellow Box   Chocolate Box   Green Box   Violet Box   DarkCyan Box   MediumSlateBlue Box   Olive Box   Thistle Box   MediumSpringGreen Box   DarkSlateBlue Box   Maroon Box  equals     SpringGreen Box   Chartreuse Box   SteelBlue Box   SeaGreen Box   MediumBlue Box   Orchid Box   SkyBlue Box   SkyBlue Box   SkyBlue Box   SkyBlue 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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