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Basic Subtraction Lesson 8: Number 8

Here's an easy example:

9
-
8
=
1
 
                  
-
                
=
  
 
   Orchid Box   Brown Box   Teal Box   Gold Box   Empty Box   Navy Box   MidnightBlue Box   DarkCyan Box   DeepSkyBlue Box  minus     Orchid Box   Brown Box   Teal Box   Gold Box   Empty Box   Navy Box   MidnightBlue Box   DarkCyan Box  equals     DeepSkyBlue Box

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


Here's another example:

14
-
8
=
6
 
                            
-
                
=
            
 
   DarkSeaGreen Box   Turquoise Box   DarkSlateBlue Box   GreenYellow Box   Lavender Box   LimeGreen Box   DarkOrchid Box   Olive Box   Khaki Box   SpringGreen Box   MediumSpringGreen Box   BlueViolet Box   MediumPurple Box   Green Box  minus     DarkSeaGreen Box   Turquoise Box   DarkSlateBlue Box   GreenYellow Box   Lavender Box   LimeGreen Box   DarkOrchid Box   Olive Box  equals     Khaki Box   SpringGreen Box   MediumSpringGreen Box   BlueViolet Box   MediumPurple Box   Green Box

We start with fourteen boxes, take away eight boxes, and now have six boxes. We take away eight boxes from our fourteen boxes to get six boxes.


Try this problem.

19
-
8
=
 
                                      
-
                
=
                      
 
   MediumSpringGreen Box   BlueViolet Box   MediumPurple Box   Green Box   DarkOliveGreen Box   Cyan Box   Yellow Box   Maroon Box   SlateBlue Box   DarkOrange Box   SaddleBrown Box   Goldenrod Box   RosyBrown Box   DeepPink Box   Magenta Box   Indigo Box   ForestGreen Box   SeaGreen Box   MediumOrchid Box  minus     MediumSpringGreen Box   BlueViolet Box   MediumPurple Box   Green Box   DarkOliveGreen Box   Cyan Box   Yellow Box   Maroon Box  equals     SlateBlue Box   DarkOrange Box   SaddleBrown Box   Goldenrod Box   RosyBrown Box   DeepPink Box   Magenta Box   Indigo Box   ForestGreen Box   SeaGreen Box   MediumOrchid Box

We start with nineteen boxes, take away eight 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:

  8 - 8 =   0
  9 - 8 =   1
10 - 8 =   2
11 - 8 =   3
12 - 8 =   4
13 - 8 =   5
14 - 8 =   6
15 - 8 =   7
16 - 8 =   8
17 - 8 =   9
18 - 8 = 10
19 - 8 = 11
20 - 8 = 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.

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