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Basic Addition Lesson 12: Number 12

Here's an easy example:

12
+
1
=
13
 
                        
+
  
=
                          
 
   RoyalBlue Box   Magenta Box   LimeGreen Box   SeaGreen Box   Plum Box   DarkOliveGreen Box   DarkViolet Box   OliveDrab Box   Olive Box   Cyan Box   DarkCyan Box   Navy Box  plus     Lavender Box  equals     RoyalBlue Box   Magenta Box   LimeGreen Box   SeaGreen Box   Plum Box   DarkOliveGreen Box   DarkViolet Box   OliveDrab Box   Olive Box   Cyan Box   DarkCyan Box   Navy Box   Lavender Box

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


Here's another example:

12
+
2
=
14
 
                        
+
    
=
                            
 
   SandyBrown Box   BlueViolet Box   Peru Box   Violet Box   MediumBlue Box   PowderBlue Box   DeepPink Box   Gold Box   SlateBlue Box   MediumPurple Box   DarkSeaGreen Box   Indigo Box  plus     Thistle Box   SaddleBrown Box  equals     SandyBrown Box   BlueViolet Box   Peru Box   Violet Box   MediumBlue Box   PowderBlue Box   DeepPink Box   Gold Box   SlateBlue Box   MediumPurple Box   DarkSeaGreen Box   Indigo Box   Thistle Box   SaddleBrown Box

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


Try this problem.

12
+
3
=
 
                        
+
      
=
                              
 
   RoyalBlue Box   Magenta Box   LimeGreen Box   SeaGreen Box   Plum Box   DarkOliveGreen Box   DarkViolet Box   OliveDrab Box   Olive Box   Cyan Box   DarkCyan Box   Navy Box  plus     Lavender Box   DarkMagenta Box   ForestGreen Box  equals     RoyalBlue Box   Magenta Box   LimeGreen Box   SeaGreen Box   Plum Box   DarkOliveGreen Box   DarkViolet Box   OliveDrab Box   Olive Box   Cyan Box   DarkCyan Box   Navy Box   Lavender Box   DarkMagenta Box   ForestGreen 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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