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Cool Math

Coolmath: Pre Algebra Divisibility Tests

For Students 9th - 10th
Known as Guzzinta Tests, here are some quick tricks you can learn to see if a number is divisible, can be divided by, another number.
Lesson Plan
Better Lesson

Better Lesson: Divisibility Rules

For Teachers 6th
The students will be investigating mathematical rules for division to assist them with fluency. This lesson will be added to their tool box!
eBook
Mathigon

Mathigon: Math Foundations: Divisibility and Prime: Greatest Common Factors

For Students 6th - 8th Standards
This lesson focuses on the greatest common factors it poses real situations and asks students answer them and then it provides more information and more exercises.
Lesson Plan
Better Lesson

Better Lesson: Basic Fractions on a Number Line (Divisible by Two)

For Teachers 3rd Standards
Third graders create number lines to represent benchmark fractions.
Lesson Plan
Council for Economic Education

Econ Ed Link: Money Is What Money Does

For Teachers 9th - 10th
Throughout history, a wide variety of items have served as money. These include gold, silver, large stone wheels, tobacco, beer, dog teeth, porpoise teeth, cattle, metal coins, paper bills, and checks. All of these types of money should...
Activity
Math Is Fun

Math Is Fun: Long Division to Decimal Places

For Students 3rd - 8th Standards
If you want to learn the traditional algorithm for long division when you divide to the decimal places, this website gives a very clear, simple step-by-step break down of the process. Students can solve six problems to practice the skill...
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Math Aids

Math Aids: Division Worksheets

For Students K - 1st
Great resource for learning and practicing division. Math worksheets are printable, may be customized, and include answer keys.

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