Basic Subtraction Lesson 3: Number 3

Here's an easy example:

DarkTurquoise Box HotPink Box OliveDrab Box Thistle Box ForestGreen Box minus DarkTurquoise Box HotPink Box OliveDrab Box equals Thistle Box ForestGreen 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:

DodgerBlue Box CadetBlue Box MediumBlue Box Pink Box SeaGreen Box SteelBlue Box SandyBrown Box Indigo Box Plum Box minus DodgerBlue Box CadetBlue Box MediumBlue Box equals Pink Box SeaGreen Box SteelBlue Box SandyBrown Box Indigo Box Plum 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.

MediumSeaGreen Box Teal Box DarkKhaki Box Green Box Lavender Box MidnightBlue Box Yellow Box Olive Box Aqua Box CornflowerBlue Box minus MediumSeaGreen Box Teal Box DarkKhaki Box equals Green Box Lavender Box MidnightBlue Box Yellow Box Olive Box Aqua Box CornflowerBlue 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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