12.5 Problem Solving Strategy: Write an Equation (p. 282-283)

I. Identify which quantities are equal to each other.
II. Use key words in the problem, identify operations needed to solve.
III. Use a variable to represent any unknown quantity
IV. Write an equation that models what is given in the problem

12.4 Solve Subtraction Equations (p. 280-281)

I. Focus on getting the variable alone on one side of the equation
II. Addition Property of Equality: Add the same number to both sides of an equation, the two sides will remain equal

12.2-3 Solve Addition Equations (p.277-279)

I. Focus on getting the variable alone on one side of the equation
A. Use the subtraction property of equality to subtract an equal amount from BOTH SIDES of the equation

12.1 Words and Equations (p.274-275)

I. Use the same strategies to translate word expressions to equations – similar to the way you translate word expressions to numerical and algebraic expressions.
II. Use variables to represent an unknown number or value
III. “is” translates as “=”

11.3-4 Expressions with Squares and Square Roots (p.264-267)

I. Use order of operations to evaluate any expression
II. In the order of operations, square roots are evaluated at the same time as exponents.

11.2 Evaluate Expressions (p.260-263)

I. Evaluate means to solve or find a value

1. The value of the expression will change, if the value of the variable changes
2. Follow the order of operations as usual
3. Replace any variables with values given before evaluating
4. Combine like terms to make the expression simpler to solve (terms are seperated by addition or subtraction symbols

11.1 Write Expressions (p.258-259)

11.1 Write Expressions
I. Use variables to represent unknown values
II. Operation key words
Addition: sum, increase, more than, plus
Subtraction: difference, decrease, less than, minus
Multiplication: Product, factors, times, multiplied by
Division: quotient, equally shared, divided by

III. Operations are only performed when evaluating, not when writing the expression