Chapter 2
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