Chapter 2

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Perimeter

2x length + 2x width

Equation

A statement that contains an equal sign, showing that to mathematical expressions are equal

Formula

And equation or rule that shows a mathematical relationship between two or more quantities

Numerical statements

Are closed sentences, and can be true or false

Algebraic statements

Are open and our neither true or false

Word phrase

Can be written as a mathematical expression, using the following word clues, and determine the operation using the expression

To simplify expressions

Combine like terms and all of the numbers

Subtraction

Difference, subtracted from, minus, less than, less, decreased by

Division

Divided by, quotient

To solve using a formula

Enter the information that you have into the formula, leaving a variable for what you do not know, then follow the procedures for solving equations

Two-step equation

Involves two operations

Solution

Is a value for the variable that makes an algebraic equation true

Mathematical expression

Is algebraic if it contains one or more variables to stand for an unknown number or numerical if it only contains numbers

Area

Length x Width

To evaluate an algebraic expression

Substitute the value given for the variable and complete using the order of operations

Addition

Sum, plus, increased, attitude, more than

Multiplication

Times, product, multiplied by

To solve a subtraction equation

Use the addition, property of equality, and add the number next to the variable to each side of the equation

To solve a multiplication equation

Use the division property of equality, and divide the number next to the variable by each side of the equation

To solve a division equation

Use the multiplication property of equality and multiply the number divided by the variable to both sides of the equation

To solve an addition equation

Use the subtraction property of equality, and subtract the number next to the variable away from both sides of the equation

Volume

length x width x height


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