Basic Concepts of Arithmetic and Algebra

• Evaluate Any Expression::evaluation
  
• Find Divisors of an Integer
  
• Check if one integer divides another
  
• Greatest Common Denominator/Least Common Multiple
  

• See Also: In Depth WikiBook on Algebra:Simple symbolic manipulation
• See Also: In Depth WikiBook on Primary mathematics:Method for Factoring

Evaluate Expressions

Use this form to evaluate expressions, multiply and divide numbers.

Examples: 5-7+(-11)*10, 2x-5yz, (x-1)^2/xy+7xy, etc etc
Note that if your expression contains variables x, y, or whatever, we'll ask you for their values. To enter squares, use the ^ sign: x^2 means x squared. It is done as described in my lesson on Evaluation and Expressions

Enter Expression:

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Prime and Composite Numbers, Divisors

Is this a prime or a composite number? Find out the divisors of a number. It is done as described in my lesson on Factoring Numbers

Enter Number:

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Divisibility

Is this number: divisible by this number:

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Greatest Common Factor and Least Common Multiple

lesson on Least Common Multiple and Greatest Common Denominator (opens in a separate window)

First number: Second number:

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