18 videos in "Evaluating Expressions"

Expressions & Formulas

Variables, Expressions, and Equations

Addition and Subtraction

Multiplication and Division

Operations and Expressions

Evaluating mathematical expressions

Evaluating an expression

Evaluating Expressions with Three Variables

Evaluate Expression for Two Variables

What is an Algebraic Expression

What is a Variable

Equivalent Expressions

Simplifying Expressions with Addition and Subtraction

Simplifying Expressions with Subtraction and Multiplication

Simplifying Expressions with Division

Simplifying Expressions with Division

Simplify Numerator and Denominator of Expressions

Simplifying Basic Expressions
Addition and Subtraction
Addition and Subtraction
6680 views, 1 rating  00:07:42
Created by and copyright of Larry Perez. Funded by the state of California through Saddleback College. More information on videos, resources, and lessons at Algebra2Go.
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Addition and subtraction on a number line, evaluating expressions using order of operations, and writing word statements for expressions and vice versa.
 How do you add and subtract positive and negative integers using a number line?
 How is subtracting like adding a negative?
 How is 4  5 the same as 4 + 5?
 How do you subtract a negative number on a number line?
 How do you subtract 4  (5)?
 How do you simplify 4 + (5  17)?
 How do you simplify 7  5  3?
 How do you simplify 6  [4 + (5)]?
 How do you write word statements for mathematical expressions?
 What are some word statements you can write for 6 + 9?
 What are some word statements you can write for 5  12?
 How do you write mathematical expressions for word statements?
 How do you write fifteen more than the difference of negative six and nine as a mathematical expression?
This is a great addition / subtraction review shown using a number line, which helps explain how to add and subtract numbers, especially when the numbers are negative. This is a very good tutorial for learning about or reviewing addition and subtraction of integers. As the lesson goes on, more and more complicated expressions are shown and order of operations is used to simplify the expressions. Finally, word statements are written from mathematical expressions.