Chapter 9: Use Multiplication and Division Facts

Lesson 1: Expressions. Objective: To write and evaluate expressions.

Lesson 2: Order of Operations. Objective: To use the order of operations to evaluate expressions.

Lesson 3: Expressions and Equations with Variables. Objective: To write and evaluate expressions and equations with variables.

Lesson 4: Problem Solving Strategy: Work Backward. Objective: To solve problems using the strategy *work backward*.

Lesson 5: Balance Equations. Objective: To keep both sides of an equation equal by suing multiplication and division.

Lesson 6: Patterns: Find a Rule. Objective: To find a rule and extend a pattern when input and output numbers are given.

Vocabulary: expression, variable, equation, order of operations

**expression: **part of a number sentence that has numbers and operation signs, but does not have an equal sign

**variable: **a letter that can stand for any number

**equation: **a number sentence that shows two amounts are equal

**order of operations: **rules for performing operations in expressions that have more than one operation

Our textbook website: www.harcourtschool.com

Some good practice websites:

http://www.gamequarium.com/placevalue.html

http://www.softschools.com/math/games/

www.multiplication.com

www.funbrain.com