Basic Subtraction Lesson 3: Number 3

Here's an easy example:

Yellow Box DarkGreen Box MediumBlue Box BurlyWood Box CornflowerBlue Box minus Yellow Box DarkGreen Box MediumBlue Box equals BurlyWood Box CornflowerBlue 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:

DarkKhaki Box Aquamarine Box Violet Box Goldenrod Box MidnightBlue Box Thistle Box Turquoise Box DeepPink Box Chocolate Box minus DarkKhaki Box Aquamarine Box Violet Box equals Goldenrod Box MidnightBlue Box Thistle Box Turquoise Box DeepPink Box Chocolate 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.

MediumPurple Box DarkTurquoise Box Olive Box PowderBlue Box Brown Box Sienna Box DarkSeaGreen Box MediumSlateBlue Box Fuchsia Box LawnGreen Box minus MediumPurple Box DarkTurquoise Box Olive Box equals PowderBlue Box Brown Box Sienna Box DarkSeaGreen Box MediumSlateBlue Box Fuchsia Box LawnGreen 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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