number of roots 19 videos

Square Roots
PreAlgebra Decimals and Percents
Understanding squaring and square roots, including decimal approximations

Deccimal Approximations of Square Roots
PreAlgebra Decimals and Percents
Finding decimal approximations of square roots without a calculator

Multiplying and DIviding with Mixed Numbers
PreAlgebra Fractions and MIxed Numbers
Multiplying or dividing with mixed numbers

Converting Improper Fractions and Mixed Numbers
PreAlgebra Fractions and MIxed Numbers
Vocabulary of improper fractions and mixed numbers

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

Probability
PreAlgebra Introductory Statistics
Probability is number of successes out of number of possible outcomes

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

Addition and Subtraction
PreAlgebra Integers
Understanding the set of integers in contrast to the whole or natural numbers

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

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

Prime Factorization
PreAlgebra Prime Numbers
Identifying prime numbers and finding prime factorizations

Comparing Fractions
PreAlgebra Fractions and MIxed Numbers
Comparing fractions using < or > and ordering them on the number line

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

Classifying and Naming
PreAlgebra Polynomials
Vocabulary of classifying polynomials by degree and number of terms

Rounding
PreAlgebra Whole Numbers
How to round whole numbers including estimation errors and real life scenarios

Applications
PreAlgebra Integers
Real word situations that involve operations on positive and negative numbers

Estimating Percents
PreAlgebra Decimals and Percents
Using 1% or 10% to estimate other percents of a given number

Scientific Notation
PreAlgebra Decimals and Percents
How to move between scientific notation and standard notation of numbers.
power scientific notation 
Multiplying and Dividing
PreAlgebra Whole Numbers
Looking at how multiplication represents repeated addition, as well as special cases of multiplying and dividing whole numbers