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www.math.com/school/subject2/lessons/S2U2L3EX.html

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www.mathplanet.com/education/pre-algebra/introducing-algebra/evaluate-expressions

Evaluate expressions. A variable is a letter, for example x, y or z, that represents an unspecified number. \$\$6+x=12\$\$ To evaluate an algebraic expression, you have to substitute a number for each variable and perform the arithmetic operations. In the example above, the variable x is equal to 6 since 6 + 6 = 12.

www.math.com/school/subject2/lessons/S2U2L3GL.html

We have learned that, in in an algebraic expression, letters can stand for numbers. When we substitute a specific value for each variable, and then perform the operations, it's called evaluating the expression. Let's evaluate the expression 3y + 2y when 5 = y. Click on the steps to see how it's done.

www.reference.com/math/evaluate-mean-math-b04b881cf4d9a789

"Evaluate" is fairly synonymous with "solve" when used in mathematics. An example of wording is, "Evaluate the cost of six tomatoes when the tomatoes are priced at \$2 each." This is a simple multiplication problem where the student would multiply 6 by 2 for an answer of \$12.

www.mathsisfun.com/definitions/evaluate.html

Illustrated definition of Evaluate: To calculate the value of. Example: Evaluate the cost of each pie when 3 pies cost 6. Answer: 2 each. ...

www.splashmath.com/math-vocabulary/algebra/evaluate

Definition of Evaluate explained with real life illustrated examples. Also learn the facts to easily understand math glossary with fun math worksheet online at Splash Math. Splash Math is an award winning math program used by more than 30 Million kids for fun math practice.

www.mathpapa.com/calc/tutorial/evaluate-expressions

Learn how to use the Algebra Calculator to evaluate expressions. Example Problem Evaluate the expression 2x for x=3. How to Evaluate the Expression in Algebra Calculator. First go to the Algebra Calculator main page. Type the following: First type the expression 2x. Then type the @ symbol. Then type x=3. Try it now: 2x @ x=3 Clickable Demo