Pre Algebra Videos

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1. Whole Numbers
2. Factions
3. Decimals, Ratios, Rates, Proportions
and Percentages
4. Exponents, Roots, Algebra and Geometry
5. Using Formulas to Solve Problems
6 Multi-Step Word Problems
7. Graphs, Signed Numbers,
Statistics, Probability, Measurement

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Part 1 Whole Numbers

N umber line addition by Peter Weatherall 1.17

Number line subtraction by Peter Weatherall 1.12

Adding Whole Numbers - Pre Algebra Help 1.21

Subtracting Whole Numbers - Pre Algebra Help

Multiplying Whole Numbers - Pre Algebra Help

Watch Video on Long Division - Math Help 2.57

Order of Operations 0.47

Order of Operations I 9.34

Order of Operations II 7.26

Order of operations song/rap

Prime Numbers 5.15
Roman Numerals 2.68

Part 2 Factions

Like Fractions - Pre Algebra Help 0.49

Adding Like Fractions 0.49

Subtracting is like adding only you subtract.

Adding and subtracting unlike fractions 8.36
Mixed numbers and improper fractions 9.13

Adding Mixed Numbers - Pre Algebra Help

Subtracting Mixed Numbers 2.14

Multiplying & Dividing Fractions, Mixed Numbers 8.42

Part 3 Decimals, Ratios, Rates, Proportions and Percentages
How to properly read a decimal number 6.49

Rounding a Decimal 2.43

Rounding Decimals 8.48

Converting Decimals into Fractions 9.22

Decimals to Fractions Song 5.28

Adding Decimals 7.40

Subtracting decimals 8.32

Multiplying decimals 9.44

Dividing decimal 9.27

Converting fractions to decimals 9.23

Ratios & Proportions in Math 1.31 or

What Is the Unit Rate in Math? 1.53

Equivalent Ratios and Rates 3.41

Introduction to Ratios 7.27 or

Introduction to Ratios (HD version) 14.13

Fractions & Proportions : How to Cross Multiply 2.10

Setting Up Proportions to solve problems 1.34

How to Solve Proportion Problems 2.35

Fractions & Proportions to Solve Problems 2.18

Using Proportions to solve Ratio Problems 3.46

Percentages 3.16

Change Fractions to Decimals to Percents 5.00

Percent as Decimals and Decimals as Percents 10.26

Math Made Easy: Working With Percents 8.39

How to Find a Percent 2.04

Percentages Problems 2.45

Percent Increase and Decrease 9.41

Part 4 Exponents, Roots, Algebra and Geometry

Exponents 1: Definitions 5.31

Rational Exponents 9.31

Rational Exponents and Roots 9.45

Simplifying Square Roots in 60 Seconds 1.24

Simplifying Algebraic Expressions

Linear Equations 1 7.27

Linear Equations 2 6.05

Lines in Math 6.23

Angles 1 9.55

Angles 2 9.04

Angles 3 9.47

Pythagorean Theorem 1 1.35

Pythagorean Theorem 2 7.56

Math Made Easy: Polygons (part 1) 4.41

Made Math Easy Polygons (part 2) 9.37

Math Made Easy: Types of Triangles 6.03

Proving Triangles are Congruent 3.34

Part 5 Using Formulas to Solve Problems

Perimeter 1.08

Area of a Square 1.07

Area of a rectangle 1.46
Area of a Parallelogram 1.29
Area of a Trapezoid 1.36

Area of a Triangle 2.08

Area & Triangle Review 6.00

Circumference 6.00

Unit Price 1.42

Volume of a Cube 0.59

Volume of a Rectangular Prism 1.02

Surface Area and Volume of a Pyramid 2.49<

Volume of a Pyramid 1.36

Volume of a cone 3.23

Volume and Surface area of Cone, Pyramid and Triangular Prism 8.17

Simple Interest 2.08

Calculating Discounts 3.48

Part 6 Multi-Step Word Problems

Whole numbers and decimals

Averages 4.02

Discount Formula 3.08

Perimeter of a Triangle

Ratios

Proportions 2.31

Percent Problems 1 9.06
Percent Problems Part 2 6.28

Algebra and Geometry

Problem 1A 2.54

Problem2 2.31

Problem 3A2 3.52

Problem 3B 4.39

Problem4 8.59

Part 7 Graphs, Signed Numbers, Statistics, Probability, Measurement

Pictographs 2.56

Number Line Introduction 2.52

Graphing Inequalities on Number Line 1.03

More on Number Lines 1 3.49

More on Number Lines 2 5.40

Absolute Value 0.52

Adding/Subtracting negative numbers 9.15
Adding/Subtracting Signed Numbers with Blocks 5.58

Multiplying, Dividing Signed Numbers 7.07

Rectangular Coordinate System 6.54

Slope and Y-Intercept 2.10

Slope and Y-intercept 8.36

Find the Slope and Y Intercept from Equation 6.17

Histogram 3.07

Central Tendency - Mean Median Mode Range 2.59

Probability Part 1 10.30

Probability Part 2 9.54

Probability Part 3 10.05 or

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