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Basic Addition Lesson 12: Number 12

Here's an easy example:

12
+
1
=
13
 
                        
+
  
=
                          
 
   Teal Box   Peru Box   CadetBlue Box   RoyalBlue Box   Cyan Box   Lavender Box   MidnightBlue Box   DarkKhaki Box   DarkSeaGreen Box   LawnGreen Box   DarkOrange Box   Navy Box  plus     Turquoise Box  equals     Teal Box   Peru Box   CadetBlue Box   RoyalBlue Box   Cyan Box   Lavender Box   MidnightBlue Box   DarkKhaki Box   DarkSeaGreen Box   LawnGreen Box   DarkOrange Box   Navy Box   Turquoise Box

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


Here's another example:

12
+
2
=
14
 
                        
+
    
=
                            
 
   MediumTurquoise Box   MediumVioletRed Box   Magenta Box   DarkSlateBlue Box   MediumBlue Box   CornflowerBlue Box   PowderBlue Box   DarkOrchid Box   Olive Box   Maroon Box   SpringGreen Box   DarkCyan Box  plus     DarkViolet Box   BurlyWood Box  equals     MediumTurquoise Box   MediumVioletRed Box   Magenta Box   DarkSlateBlue Box   MediumBlue Box   CornflowerBlue Box   PowderBlue Box   DarkOrchid Box   Olive Box   Maroon Box   SpringGreen Box   DarkCyan Box   DarkViolet Box   BurlyWood Box

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


Try this problem.

12
+
3
=
 
                        
+
      
=
                              
 
   Teal Box   Peru Box   CadetBlue Box   RoyalBlue Box   Cyan Box   Lavender Box   MidnightBlue Box   DarkKhaki Box   DarkSeaGreen Box   LawnGreen Box   DarkOrange Box   Navy Box  plus     Turquoise Box   Yellow Box   Goldenrod Box  equals     Teal Box   Peru Box   CadetBlue Box   RoyalBlue Box   Cyan Box   Lavender Box   MidnightBlue Box   DarkKhaki Box   DarkSeaGreen Box   LawnGreen Box   DarkOrange Box   Navy Box   Turquoise Box   Yellow Box   Goldenrod 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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