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Subtraction
Subtraction is the difference between two numbers. It is the inverse of addition and symbolized by the (-) sign. So you can read 5 – 1 and simply the addition of 5 + (-1). Unlike addition, subtraction is neither commutative nor associative, so order of the numbers affects the outcome. Below is a selection of videos and resources to help kids of all ages learn about subtraction.

Videos


Teacher shows you how to subtract whole numbers.

Peter Weatherall uses a number line to teach subtraction.

Video shows you subtraction is the opposite of addition.

Cartoon about bowling teaches subtraction.

A gum ball machine goes over subtraction problems.

Games

Fun 4 The Brain Subtraction Games - Variety of subtraction games with fun animals.
Gamequarium Subtraction Games - Lots of quizzes that make you better at subtraction.
Fishing Subtraction Game - Fish for the correct answer in this game.
Pinball Subtraction Game - Study subtraction by playing pinball.

Worksheets

Super Teacher Subtraction Worksheets - Subtraction problems in many themes such as money and larger numbers.
Math is Fun Subtraction Worksheets - Choose a worksheet from criteria like easy, medium, hard and borrowing.
Subtrction Worksheets - Free printable worksheets for early grade school students.
Addition with Two Digits - 2 digit numbers to 100 problems you can print out.

Information

Coolmath's Subtraction Lessons for Kids - 7 lessons put together to help anyone understand subtraction
Teaching Ideas for Subtraction - Resources and activities to work your subtraction skills.
Kids Math Blog Subtraction - Subtraction lessons with one and two digit regrouping.