Home      Site Map

Basic Addition Lesson 11: Number 11

Here's an easy example:

11
+
1
=
12
 
                      
+
  
=
                        
 
   Magenta Box   Yellow Box   PowderBlue Box   DarkBlue Box   MediumSlateBlue Box   LawnGreen Box   RoyalBlue Box   Goldenrod Box   MediumSpringGreen Box   Coral Box   Chocolate Box  plus     Gold Box  equals     Magenta Box   Yellow Box   PowderBlue Box   DarkBlue Box   MediumSlateBlue Box   LawnGreen Box   RoyalBlue Box   Goldenrod Box   MediumSpringGreen Box   Coral Box   Chocolate Box   Gold Box

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


Here's another example:

11
+
2
=
13
 
                      
+
    
=
                          
 
   SteelBlue Box   Purple Box   DeepPink Box   Empty Box   MidnightBlue Box   DarkOrange Box   YellowGreen Box   MediumVioletRed Box   SlateBlue Box   Aqua Box   MediumOrchid Box  plus     Pink Box   DarkCyan Box  equals     SteelBlue Box   Purple Box   DeepPink Box   Empty Box   MidnightBlue Box   DarkOrange Box   YellowGreen Box   MediumVioletRed Box   SlateBlue Box   Aqua Box   MediumOrchid Box   Pink Box   DarkCyan Box

We start with eleven boxes, add two boxes, and now have thirteen boxes.


Try this problem.

11
+
3
=
 
                      
+
      
=
                            
 
   Indigo Box   Aquamarine Box   SandyBrown Box   Cyan Box   MediumPurple Box   Turquoise Box   SpringGreen Box   Peru Box   CadetBlue Box   Sienna Box   Magenta Box  plus     Yellow Box   PowderBlue Box   DarkBlue Box  equals     Indigo Box   Aquamarine Box   SandyBrown Box   Cyan Box   MediumPurple Box   Turquoise Box   SpringGreen Box   Peru Box   CadetBlue Box   Sienna Box   Magenta Box   Yellow Box   PowderBlue Box   DarkBlue Box

We start with eleven boxes, add three boxes, and now have fourteen 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:

11 + 1 = 12
11 + 2 = 13
11 + 3 = 14
11 + 4 = 15
11 + 5 = 16
11 + 6 = 17
11 + 7 = 18
11 + 8 = 18
11 + 9 = 10
11 + 10 = 21
11 + 11 = 22
11 + 12 = 23


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.

Continue to Next Page