adding a multiple of one row to another 19 videos


Adding and Subtracting
PreAlgebra Whole Numbers
Using the number line to represent adding and subtracting whole numbers

Solving One Variable Inequalities
PreAlgebra Solving Equations and Inequalities
How to solve one step inequalities

Adding and Subtracting Polynomials
PreAlgebra Polynomials
Adding and subtracting polynomials with pictures or aligning vertically

Graphing One Variable Inequalities
PreAlgebra Solving Equations and Inequalities
Graphing one variable inequalities on a number line

Adding/Subtracting Fractions Like Denominators
PreAlgebra Fractions and MIxed Numbers
Adding and subtracting fractions that have the same denominator, including a visual representation

Adding/Subtracting Fractions Unlike Denominators
PreAlgebra Fractions and MIxed Numbers
Drawing pictures and procedures for adding or subtracting fractions with unlike denominators

Multiplication and Division
PreAlgebra Integers
Learn how to multiply and divide positive and negative numbers.

Solving Equations  one variable term
PreAlgebra Solving Equations and Inequalities
Solving two step equations with integers

Multiplication and Division with Decimals
PreAlgebra Decimals and Percents
Multiplying and dividing decimals by ignoring and later replacing the decimal point

Divisibility
PreAlgebra Prime Numbers
Shortcuts to determine whether a number is a factor of another

Addition and Subtraction with Decimals
PreAlgebra Decimals and Percents
Adding or subtracting decimals by vertically lining up the zeros

Commutative, Associative
PreAlgebra Properties of Numbers
Overview of the commutative and associative properties for addition and multiplication

Distributive
PreAlgebra Properties of Numbers
Introduction to the distributive property of multiplication over addition or subtraction


Solving Equations with fractions and decimals by "Clearing"
PreAlgebra Solving Equations and Inequalities
Solving equations with fractions by multiplying by the least common multiple

Addition and Subtraction with Mixed Numbers
PreAlgebra Fractions and MIxed Numbers
Adding or subtracting mixed numbers by either converting them to improper fractions or working with the integer part and the fractional part separately

Multiplying and Dividing
PreAlgebra Whole Numbers
Looking at how multiplication represents repeated addition, as well as special cases of multiplying and dividing whole numbers