Basic Subtraction Lesson 10: Number 10
Here's an easy example:
DarkViolet Box RosyBrown Box CadetBlue Box SlateBlue Box Indigo Box Turquoise Box Sienna Box Gold Box PowderBlue Box Purple Box Magenta Box SpringGreen Box
minus
DarkViolet Box RosyBrown Box CadetBlue Box SlateBlue Box Indigo Box Turquoise Box Sienna Box Gold Box PowderBlue Box Purple Box
equals
Magenta Box SpringGreen Box
We start with twelve boxes, take away ten boxes, and now have two boxes. We take away ten boxes from our twelve boxes to get two boxes.
Here's another example:
Cyan Box Yellow Box MediumAquamarine Box Coral Box RoyalBlue Box Chocolate Box Green Box DarkOrange Box Peru Box DarkGreen Box CornflowerBlue Box Empty Box Blue Box MediumPurple Box Fuchsia Box HotPink Box
minus
Cyan Box Yellow Box MediumAquamarine Box Coral Box RoyalBlue Box Chocolate Box Green Box DarkOrange Box Peru Box DarkGreen Box
equals
CornflowerBlue Box Empty Box Blue Box MediumPurple Box Fuchsia Box HotPink Box
We start with sixteen boxes, take away ten boxes, and now have six boxes. We take away ten boxes from our sixteen boxes to get six boxes.
Try this problem.
SeaGreen Box SkyBlue Box SandyBrown Box Plum Box Wheat Box MediumOrchid Box BurlyWood Box Teal Box DarkSlateBlue Box MediumSeaGreen Box DarkOliveGreen Box YellowGreen Box MidnightBlue Box DarkCyan Box Pink Box DarkGoldenrod Box BlueViolet Box Tan Box Aqua Box DarkOrchid Box
minus
SeaGreen Box SkyBlue Box SandyBrown Box Plum Box Wheat Box MediumOrchid Box BurlyWood Box Teal Box DarkSlateBlue Box MediumSeaGreen Box
equals
DarkOliveGreen Box YellowGreen Box MidnightBlue Box DarkCyan Box Pink Box DarkGoldenrod Box BlueViolet Box Tan Box Aqua Box DarkOrchid Box
We start with twenty boxes, take away ten boxes, and now have ten 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:
10 - 10 = 0
11 - 10 = 1
12 - 10 = 2
13 - 10 = 3
14 - 10 = 4
15 - 10 = 5
16 - 10 = 6
17 - 10 = 7
18 - 10 = 8
19 - 10 = 9
20 - 10 = 10
21 - 10 = 11
22 - 10 = 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