Basic Subtraction Lesson 3: Number 3

Here's an easy example:

CadetBlue Box HotPink Box Sienna Box Indigo Box DarkOrange Box minus CadetBlue Box HotPink Box Sienna Box equals Indigo Box DarkOrange 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:

DarkSlateBlue Box MediumTurquoise Box MediumPurple Box Aquamarine Box DarkKhaki Box SeaGreen Box Goldenrod Box BurlyWood Box DarkSeaGreen Box minus DarkSlateBlue Box MediumTurquoise Box MediumPurple Box equals Aquamarine Box DarkKhaki Box SeaGreen Box Goldenrod Box BurlyWood Box DarkSeaGreen 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.

SpringGreen Box Pink Box DeepSkyBlue Box Green Box Yellow Box MediumBlue Box MediumAquamarine Box Tan Box RosyBrown Box Olive Box minus SpringGreen Box Pink Box DeepSkyBlue Box equals Green Box Yellow Box MediumBlue Box MediumAquamarine Box Tan Box RosyBrown Box Olive 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