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Basic Addition Lesson 12: Number 12

Here's an easy example:

12
+
1
=
13
 
                        
+
  
=
                          
 
   DarkSlateBlue Box   YellowGreen Box   ForestGreen Box   DeepPink Box   Navy Box   Brown Box   Plum Box   Turquoise Box   DarkGreen Box   RosyBrown Box   DarkKhaki Box   Purple Box  plus     CornflowerBlue Box  equals     DarkSlateBlue Box   YellowGreen Box   ForestGreen Box   DeepPink Box   Navy Box   Brown Box   Plum Box   Turquoise Box   DarkGreen Box   RosyBrown Box   DarkKhaki Box   Purple Box   CornflowerBlue Box

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


Here's another example:

12
+
2
=
14
 
                        
+
    
=
                            
 
   DarkViolet Box   Maroon Box   DarkSeaGreen Box   OliveDrab Box   BlueViolet Box   GreenYellow Box   MediumSeaGreen Box   Lavender Box   SeaGreen Box   Pink Box   Orchid Box   Cyan Box  plus     Sienna Box   DarkTurquoise Box  equals     DarkViolet Box   Maroon Box   DarkSeaGreen Box   OliveDrab Box   BlueViolet Box   GreenYellow Box   MediumSeaGreen Box   Lavender Box   SeaGreen Box   Pink Box   Orchid Box   Cyan Box   Sienna Box   DarkTurquoise Box

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


Try this problem.

12
+
3
=
 
                        
+
      
=
                              
 
   DarkSlateBlue Box   YellowGreen Box   ForestGreen Box   DeepPink Box   Navy Box   Brown Box   Plum Box   Turquoise Box   DarkGreen Box   RosyBrown Box   DarkKhaki Box   Purple Box  plus     CornflowerBlue Box   MediumSpringGreen Box   MediumSlateBlue Box  equals     DarkSlateBlue Box   YellowGreen Box   ForestGreen Box   DeepPink Box   Navy Box   Brown Box   Plum Box   Turquoise Box   DarkGreen Box   RosyBrown Box   DarkKhaki Box   Purple Box   CornflowerBlue Box   MediumSpringGreen Box   MediumSlateBlue 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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