Home      Site Map

Basic Addition Lesson 9: Number 9

Here's an easy example:

9
+
1
=
10
 
                  
+
  
=
                    
 
   CornflowerBlue Box   Magenta Box   RoyalBlue Box   CadetBlue Box   DarkMagenta Box   RosyBrown Box   DarkViolet Box   Tan Box   MediumSpringGreen Box  plus     SandyBrown Box  equals     CornflowerBlue Box   Magenta Box   RoyalBlue Box   CadetBlue Box   DarkMagenta Box   RosyBrown Box   DarkViolet Box   Tan Box   MediumSpringGreen Box   SandyBrown Box

We start with nine boxes, add one box, and now have ten boxes.


Here's another example:

9
+
2
=
11
 
                  
+
    
=
                      
 
   Coral Box   DeepSkyBlue Box   DarkCyan Box   MediumOrchid Box   DarkOliveGreen Box   Pink Box   DarkGoldenrod Box   Olive Box   DarkKhaki Box  plus     DarkTurquoise Box   SaddleBrown Box  equals     Coral Box   DeepSkyBlue Box   DarkCyan Box   MediumOrchid Box   DarkOliveGreen Box   Pink Box   DarkGoldenrod Box   Olive Box   DarkKhaki Box   DarkTurquoise Box   SaddleBrown Box

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


Try this problem.

9
+
3
=
 
                  
+
      
=
                        
 
   SaddleBrown Box   DeepPink Box   MediumSlateBlue Box   Indigo Box   DarkSlateBlue Box   BlueViolet Box   Empty Box   SpringGreen Box   LawnGreen Box  plus     DarkBlue Box   CornflowerBlue Box   Magenta Box  equals     SaddleBrown Box   DeepPink Box   MediumSlateBlue Box   Indigo Box   DarkSlateBlue Box   BlueViolet Box   Empty Box   SpringGreen Box   LawnGreen Box   DarkBlue Box   CornflowerBlue Box   Magenta Box

We start with nine boxes, add three boxes, and now have twelve 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:

9 + 1 = 10
9 + 2 = 11
9 + 3 = 12
9 + 4 = 13
9 + 5 = 14
9 + 6 = 15
9 + 7 = 16
9 + 8 = 17
9 + 9 = 18
9 + 10 = 19
9 + 11 = 20
9 + 12 = 21


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