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Basic Addition Lesson 12: Number 12

Here's an easy example:

12
+
1
=
13
 
                        
+
  
=
                          
 
   Pink Box   Purple Box   MediumAquamarine Box   Sienna Box   Teal Box   Tan Box   Blue Box   SkyBlue Box   Orchid Box   DarkGreen Box   BlueViolet Box   HotPink Box  plus     MediumTurquoise Box  equals     Pink Box   Purple Box   MediumAquamarine Box   Sienna Box   Teal Box   Tan Box   Blue Box   SkyBlue Box   Orchid Box   DarkGreen Box   BlueViolet Box   HotPink Box   MediumTurquoise Box

We start with twelve boxes, add one box, and now have thirteen boxes.


Here's another example:

12
+
2
=
14
 
                        
+
    
=
                            
 
   Fuchsia Box   MediumSpringGreen Box   DarkMagenta Box   DarkTurquoise Box   MidnightBlue Box   SaddleBrown Box   DarkGoldenrod Box   MediumVioletRed Box   Chocolate Box   DarkOrange Box   Plum Box   CornflowerBlue Box  plus     SandyBrown Box   SlateBlue Box  equals     Fuchsia Box   MediumSpringGreen Box   DarkMagenta Box   DarkTurquoise Box   MidnightBlue Box   SaddleBrown Box   DarkGoldenrod Box   MediumVioletRed Box   Chocolate Box   DarkOrange Box   Plum Box   CornflowerBlue Box   SandyBrown Box   SlateBlue Box

We start with twelve boxes, add two boxes, and now have fourteen boxes.


Try this problem.

12
+
3
=
 
                        
+
      
=
                              
 
   Pink Box   Purple Box   MediumAquamarine Box   Sienna Box   Teal Box   Tan Box   Blue Box   SkyBlue Box   Orchid Box   DarkGreen Box   BlueViolet Box   HotPink Box  plus     MediumTurquoise Box   DarkCyan Box   RosyBrown Box  equals     Pink Box   Purple Box   MediumAquamarine Box   Sienna Box   Teal Box   Tan Box   Blue Box   SkyBlue Box   Orchid Box   DarkGreen Box   BlueViolet Box   HotPink Box   MediumTurquoise Box   DarkCyan Box   RosyBrown Box

We start with twelve boxes, add three boxes, and now have fifteen boxes.


In order to do basic addition, 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 + 1 = 13
12 + 2 = 14
12 + 3 = 15
12 + 4 = 16
12 + 5 = 17
12+ 6 = 18
12 + 7 = 19
12 + 8 = 20
12 + 9 = 21
12 + 10 = 22
12 + 11 = 23
12 + 12 = 24


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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