Basic Subtraction Lesson 3: Number 3

Here's an easy example:

OliveDrab Box Orchid Box DarkViolet Box SaddleBrown Box MediumAquamarine Box minus OliveDrab Box Orchid Box DarkViolet Box equals SaddleBrown Box MediumAquamarine Box

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

Here's another example:

Tan Box MediumTurquoise Box Gold Box SeaGreen Box SandyBrown Box DeepSkyBlue Box GreenYellow Box Empty Box Coral Box minus Tan Box MediumTurquoise Box Gold Box equals SeaGreen Box SandyBrown Box DeepSkyBlue Box GreenYellow Box Empty Box Coral Box

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

Try this problem.

SlateBlue Box MediumBlue Box BurlyWood Box Yellow Box DarkGreen Box ForestGreen Box Chocolate Box DarkOrchid Box Wheat Box Sienna Box minus SlateBlue Box MediumBlue Box BurlyWood Box equals Yellow Box DarkGreen Box ForestGreen Box Chocolate Box DarkOrchid Box Wheat Box Sienna Box

We start with ten boxes, take away three boxes, and now have seven 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:

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