Home      Site Map

Basic Subtraction Lesson 7: Number 7

Here's an easy example:

8
-
7
=
1
 
                
-
              
=
  
 
   DarkCyan Box   DarkViolet Box   MediumSpringGreen Box   Orchid Box   DarkOrchid Box   BurlyWood Box   DarkGoldenrod Box   Tan Box  minus     DarkCyan Box   DarkViolet Box   MediumSpringGreen Box   Orchid Box   DarkOrchid Box   BurlyWood Box   DarkGoldenrod Box  equals     Tan Box

We start with eight boxes, take away seven boxes, and now have one box. We take away seven boxes from our eight boxes to get one box.


Here's another example:

12
-
7
=
5
 
                        
-
              
=
          
 
   Aqua Box   CornflowerBlue Box   DarkOrange Box   DarkSlateBlue Box   RosyBrown Box   MediumSlateBlue Box   HotPink Box   Pink Box   Sienna Box   DarkGreen Box   DarkBlue Box   PowderBlue Box  minus     Aqua Box   CornflowerBlue Box   DarkOrange Box   DarkSlateBlue Box   RosyBrown Box   MediumSlateBlue Box   HotPink Box  equals     Pink Box   Sienna Box   DarkGreen Box   DarkBlue Box   PowderBlue Box

We start with twelve boxes, take away seven boxes, and now have five boxes. We take away seven boxes from our twelve boxes to get five boxes.


Try this problem.

18
-
7
=
 
                                    
-
              
=
                      
 
   DarkBlue Box   PowderBlue Box   Indigo Box   Gold Box   BlueViolet Box   MediumOrchid Box   MidnightBlue Box   Goldenrod Box   LimeGreen Box   Teal Box   GreenYellow Box   SteelBlue Box   DarkMagenta Box   Fuchsia Box   Olive Box   Aquamarine Box   Navy Box   MediumAquamarine Box  minus     DarkBlue Box   PowderBlue Box   Indigo Box   Gold Box   BlueViolet Box   MediumOrchid Box   MidnightBlue Box  equals     Goldenrod Box   LimeGreen Box   Teal Box   GreenYellow Box   SteelBlue Box   DarkMagenta Box   Fuchsia Box   Olive Box   Aquamarine Box   Navy Box   MediumAquamarine Box

We start with eighteen boxes, take away seven boxes, and now have eleven boxes.


In order to do basic subtraction, 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:

  7 - 7 =   0
  8 - 7 =   1
  9 - 7 =   2
10 - 7 =   3
11 - 7 =   4
12 - 7 =   5
13 - 7 =   6
14 - 7 =   7
15 - 7 =   8
16 - 7 =   9
17 - 7 = 10
18 - 7 = 11
19 - 7 = 12


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