Basic Subtraction Lesson 3: Number 3

Here's an easy example:

Purple Box DarkGoldenrod Box DarkBlue Box CornflowerBlue Box MediumVioletRed Box minus Purple Box DarkGoldenrod Box DarkBlue Box equals CornflowerBlue Box MediumVioletRed 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:

SkyBlue Box DarkOliveGreen Box Chartreuse Box Khaki Box BlueViolet Box Orchid Box OliveDrab Box DeepPink Box DarkOrchid Box minus SkyBlue Box DarkOliveGreen Box Chartreuse Box equals Khaki Box BlueViolet Box Orchid Box OliveDrab Box DeepPink Box DarkOrchid 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.

Chocolate Box SaddleBrown Box Navy Box YellowGreen Box Yellow Box GreenYellow Box MediumBlue Box Violet Box MediumSpringGreen Box Plum Box minus Chocolate Box SaddleBrown Box Navy Box equals YellowGreen Box Yellow Box GreenYellow Box MediumBlue Box Violet Box MediumSpringGreen Box Plum 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.

Continue to Next Page