Forgot password?
Pre Algebra Resource Page
 
   

1888 Videos Available
     
  These Pre Algebra
videos are available on
subscription!		  
  And for just $9.95/month
you can have unlimited access to
over 20,000 additional videos
covering every other topic
in K-12 math.		  
 
   
     
 
Welcome to the Guaranteach Pre Algebra Resource page!

Here you can get access to some of our best Pre Algebra videos! Scroll down or pick a category below to find dozens of short video lessons available immediately. Please create an account to view these lessons.
 
What kind of Pre Algebra help do you need?
 
  More Number Types (12 lessons, 102 videos)
  Multiples (11 lessons, 96 videos)
  Prime Numbers (14 lessons, 110 videos)
  Negative Numbers (12 lessons, 114 videos)
  Exponents (19 lessons, 183 videos)
  Percentages (12 lessons, 105 videos)
  Roots (15 lessons, 127 videos)
  Absolute Value (10 lessons, 87 videos)
 
 More Number Types (12 lessons, 102 videos)

Irrational Numbers
 (6 videos)

Play
In this lesson, students are introduced to the concept of numbers which can not be expressed as a fraction. This lesson is part of a group of lessons about types of numbers. (3:41)
Imaginary Numbers
 (5 videos)

Play
The square root of -1 (i) is introduced in this lesson. This lesson is part of a group of lessons covering types of numbers. (2:21)
Number System Relationships
 (5 videos)

Play
The way different types of numbers (real, irrational, imaginary, etc.) are related is discussed in this lesson. Student should be familiar with different number systems before beginning this lesson. (2:36)
Rational Numbers
 (12 videos)

Play
This lesson will go over rational numbers, or fractions. Students should be aware of fractions and how they are read before watching this video. (1:39)
 
Other lessons in this section: Negative Numbers on the Number Line (9 videos) , Negative Numbers (12 videos) , Complex Numbers (5 videos) , Integers from -10 to 10 (12 videos) , Real Numbers (6 videos) , Rational Numbers from -1 to 1 (10 videos) , Rational Numbers from 10 to -10 (10 videos) , Rational Numbers Beyond -10 to 10 (10 videos)
 Multiples (11 lessons, 96 videos)

Introduction to Multiples
 (8 videos)

Play
In this lesson, students will be introduced to the concept of multiples (numbers which are the result of the original multiplied by another number). Students viewing this lesson should have a strong understanding of multiplication and divisibility. (1:41)
The Least Common Multiple
 (6 videos)

Play
This lesson introduces the concept of the least common multiple, or the lowest possible number that is a multiple of two or more other numbers. Students should be familiar with the concept of multiples, and be prepared to compare sets of multiples of two (2:09)
Finding the Multiples of a Number
 (11 videos)

Play
In this lesson, students will see how to find the multiples of a number. Before this lesson, students should have already learned about multiples and should be familiar with multiplication and divisibility. (2:31)
Finding the Lowest Common Multiple
 (10 videos)

Play
This lesson demonstrates the comparison of multiples of two or more numbers to find the lowest common multiple. Students should have a strong understanding of multiples and divisibility before watching this video. (2:43)
 
Other lessons in this section: Multiple Charts (7 videos) , The Multiple Zero (7 videos) , Finding the LCM with Factor Trees (11 videos) , Finding the LCM with Multiple Charts (10 videos) , Identifying Multiples (11 videos) , Practice Identifying Multiples (6 videos) , Practice Finding the LCM (9 videos)
 Prime Numbers (14 lessons, 110 videos)

Identifying Prime Numbers
 (10 videos)

Play
This lesson demonstrates how to identify prime numbers. Before watching this video, students should be familiar with the definition of a prime number. (3:40)
Prime Numbers
 (12 videos)

Play
Here the concept of a prime number is introduced. We begin by demonstrating how to determine whether a number is prime or composite, as well as exploring the relationship between 1, 0, even numbers, odd numbers and primality. Further lessons explore how to find all of the prime factors of a number and record these factors with regular or exponential notation. (2:21)
Determining Prime Factorization
 (11 videos)

Play
This lesson demonstrates how to finde prime factors of a number. Students should have a strong understanding of prime numbers and factors before watching this video. (2:02)
The Sieve of Erasthenes
 (0 videos)
 
Other lessons in this section: Prime Factorization (6 videos) , Prime Factorization Exponential Notation (6 videos) , Odd and Even Primes (6 videos) , One and Primality (5 videos) , Zero and Primality (5 videos) , Early Primes (7 videos) , Converting Factorization to Exponential Notation (10 videos) , The Sieve of Eratosthenes (10 videos) , Composite Numbers (10 videos) , Practice Identifying Prime Numbers (6 videos) , Practice Prime Factorization (6 videos)
 Negative Numbers (12 lessons, 114 videos)

Introduction to Negative Numbers
 (7 videos)

Play
Students will be introduced to the concept of negative numbers (number which fall behind or below zero on the number line). Students will need a strong understanding of negative numbers to proceed to concepts such as absolute value. (3:40)
Size and Negativity
 (7 videos)

Play
In this lesson, the size of negative numbers will be discussed. This lesson is part of a series of lessons on negative numbers, and will explain that negative numbers do not behave as positive numbers when talking about the size or value of the number. (2:05)
Comparing Negative Numbers
 (12 videos)

Play
In this lesson, students will see how to determine which number is least or greatest when dealing with negative numbers. This lesson is one of a series of lessons on negative numbers. (4:16)
Finding a Negative Reciprocal
 (10 videos)

Play
This lesson demonstrates how to find the negative reciprocal of a positive number. This lesson is part of a series of lessons on negative numbers. (2:11)
 
Other lessons in this section: Negative Reciprocals (7 videos) , Ordering Negative Numbers (11 videos) , Comparing Positive and Negative Numbers (11 videos) , Relating Positive and Negative Numbers (12 videos) , Ordering Positive and Negative Numbers (11 videos) , Practice Finding the Negative Reciprocal (7 videos) , Practice Ordering Positive and Negative Numbers (8 videos) , Absolute Value (8 videos)
 Exponents (19 lessons, 183 videos)

Introduction to Exponents
 (9 videos)

Play
This lesson will give students the information needed to begin understanding exponents. This lesson will be part of a series of lessons covering exponents. (2:15)
Applying the Multiplication Rule
 (11 videos)

Play
This lesson demonstrates how to work through a multiplication problem that contains exponents. This lesson expands on the concept covered in the "Multiplication Rule" lesson. (1:53)
Applying the Division Rule
 (11 videos)

Play
This lesson demonstrates how to work through division problems which contain exponents. This lesson expands on the basic concept discussed in the "Division Rule" lesson. (2:31)
Applying the Power Rule
 (11 videos)

Play
In this lesson, the power rule is demonstrated with examples of problems in which a power is being raised to another power. Students should already have learned about the power rule in a previous lesson. (2:26)
 
Other lessons in this section: Distributive Property of Exponents (8 videos) , Order of Operations with Exponents (6 videos) , Applying Multiple Rules of Exponents (11 videos) , The Exponent Zero (11 videos) , The Exponent One (9 videos) , The Multiplication Rule (10 videos) , The Division Rule (9 videos) , The Power Rule (9 videos) , Addition and Subtraction of Powers (10 videos) , Expanding Exponential Notation (11 videos) , Converting to Exponential Notation (10 videos) , The Square of a Number (13 videos) , The Cube of a Number (12 videos) , Practice Evaluating Exponents (7 videos) , Practice Combining Exponents (5 videos)
 Percentages (12 lessons, 105 videos)

Introduction to Percentages
 (8 videos)

Play
Students are introduced to percentages, or parts of a whole, in this lesson. This lesson is the first in a series of lessons addressing concepts related to percentages. (1:59)
Partial Percentages
 (5 videos)

Play
This lesson explains that while a percentage is a part of a whole, it does not itself have to be a whole number. This lesson is part of a series of lessons about percentages. (4:40)
Whole and Greater Percentages
 (6 videos)

Play
Students learn how to identify a whole (100%) or greater (>100%) percentages. This lesson is part of a group of lessons about percentages. (1:54)
Multiplying Percentages
 (11 videos)

Play
In this lesson, students are shown how to find the product of two percentages. This lesson is part of a series of lesson dealing with operations and percentages. (3:43)
 
Other lessons in this section: Adding Percentages (12 videos) , Subtracting Percentages (11 videos) , Adding Whole Numbers and Percentages (10 videos) , Dividing Percentages (10 videos) , Dividing Whole Numbers by Percentages (11 videos) , Practice Multiplying and Dividing Percentages (6 videos) , Practice Adding and Subtracting Percents (8 videos) , Estimating a Percentage (7 videos)
 Roots (15 lessons, 127 videos)

Introduction to Roots
 (7 videos)

Play
This lesson introduces roots, or numbers inside radicals, and goes over the parts of a root (symbols and notation), types of roots (square, cubed, etc.) and how to find a root. This lesson is the first in a series of lessons on roots. (2:38)
Taking a Root
 (11 videos)

Play
This lesson demonstrates how to take the root of a number. Students should already be familiar with the concept of a root before beginning this lesson. (2:30)
Taking a Partial Root
 (10 videos)

Play
This lesson shows students what to do when an exact root can not be found. Before beginning this lesson, students should have a strong understanding of the concept of roots and how to take them. (2:20)
Multiplying Roots
 (10 videos)

Play
This lesson demonstrates the multiplication of roots. This lesson is part of a group of lessons showing root operations. (3:46)
 
Other lessons in this section: Addition and Subtraction in Roots (7 videos) , Multiplication of Roots (8 videos) , Division of Roots (7 videos) , Dividing Roots (10 videos) , Taking a Root to an Exponent (10 videos) , Multiplying Percentages by Whole Numbers (10 videos) , Square Roots (11 videos) , Practice Taking a Root (6 videos) , Estimating Square Roots (8 videos) , Calculating Square Roots (7 videos) , Practice Combining Roots (5 videos)
 Absolute Value (10 lessons, 87 videos)

Absolute Value
 (8 videos)

Play
Here absolute value bars are introduced and explored both in and out of the context of an equation. Lessons cover how to take the absolute value of a positive number, a negative number or an operation. Further lessons demonstrate how to apply order of operations with absolute values in order to add, subtract, multiply or divide with absolute value bars. (3:14)
Order of Operations in Absolute Value
 (6 videos)

Play
Students learn how the order of operations applies when absolute value is indicated in the equation in this lesson. Students should know the definition and notation of absolute value before beginning this lesson. (1:20)
Taking the Absolute Value of a Negative
 (10 videos)

Play
This lesson demonstrates how to find the absolute value (distance from zero) of a negative number. This lesson is part of a group of lessons demonstrating how to find absolute value. (0:58)
Taking the Absolute Value of an Operation
 (10 videos)

Play
In this lesson, students see how to deal with an equation inside absolute value symbols. This lesson is part of a series of lessons concerning absolute value. (3:02)
 
Other lessons in this section: Absolute Value on the Number Line (8 videos) , Taking the Absolute Value of a Non Negative (10 videos) , Adding and Subtracting Absolute Value (10 videos) , Multiplying and Dividing Absolute Values (11 videos) , Practice Taking the Absolute Value (7 videos) , Practice Combining Absolute Values (7 videos)
 
 
 
  Practice Worksheets

  
  Sometimes doing is the best way to learn. Find practice worksheets below with videos of step-by-step explanations & solutions.

  
 
PRACTICE WITH PERCENTAGES WORKSHEET.PDF
Answer 1 Answer 2 Answer 3 Answer 4 Answer 5 Answer 6 Answer 7 Answer 8 Answer 9
PRACTICE WITH ABSOLUTE VALUE WORKSHEET.PDF
Answer 1 Answer 2 Answer 3 Answer 4 Answer 5 Answer 6 Answer 7 Answer 8 Answer 9 Answer 10
PRACTICE WITH EXPONENTS WORKSHEET.PDF
Answer 1 Answer 2 Answer 3 Answer 4 Answer 5 Answer 6 Answer 7 Answer 8 Answer 9 Answer 10
PRACTICE WITH ROOTS WORKSHEET.PDF
Answer 1 Answer 2 Answer 3 Answer 4 Answer 5 Answer 6 Answer 7 Answer 8 Answer 9
PRACTICE WITH MULTIPLES.PDF
Answer 1 Answer 2 Answer 3 Answer 4 Answer 5 Answer 6 Answer 7
PRACTICE WITH PRIMES.PDF
Answer 1 Answer 2 Answer 3 Answer 4 Answer 5 Answer 6 Answer 7 Answer 8 Answer 9 Answer 10
 
 
 
Want more math help? Sign-up today for instant access to 20,000+ video lessons covering every math topic from Algebra to Statistics. Subscriptions start at $9.95/month. Free trials also available.