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Math With Larry
Added on 5/23/2008
By MathWithLarry Tutorials

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Recent Media

Answers to Student Submitted Questions Percents: Video 1
The video provides a detailed explanation on a percent calculation question submitted by a student. Two methods for percent calculation are explained, Method 1 Using a Proportion and Method 2 Using an Equation.

3/5/2010
3.75 minutes

Names of Basic Shapes (Math Slides)
The Slide Show "Names of Basic Shapes" is a very basic introduction to two side dimensional shapes: polygons.

3/5/2010
1.72 minutes

Updated Lesson 98: Similar vs Congruent
In real life, we use the word "similar" to mean different things. The term is somewhat vague. In math, it has a special definition. See the picture below. In math, two figures are called similar if they are the same shape, but different sizes, such as...

3/4/2010
2.30 minutes

Lesson 98: Similar vs Congruent
In real life, we use the word "similar" to mean different things. The term is somewhat vague. In math, it has a special definition. See the picture below. In math, two figures are called similar if they are the same shape, but different sizes, such as...

3/4/2010
1.88 minutes

Updated Lesson 19: Greater and Less Than
Many test questions in math ask you to determine which of two numbers is greater. We use the "<" and ">" symbols to represent this. Copyright © MathWithLarry.com

3/4/2010
4.68 minutes

Updated Lesson 7: Commutative Property of Addition
When adding two numbers together, it doesn't matter what order you add them in. This is because adding is just a way of combining. If I have 3 apples and my friend has 5, it doesn't matter if we do 3 + 5 or 5 + 3. Either way they add up to 8. This is ...

3/4/2010
1.70 minutes

Updated Lesson 6: Even and Odd Numbers
It's important to be able to identify even and odd numbers. Copyright © MathWithLarry.com

3/4/2010
2.67 minutes

Updated Lesson 4: Basic Addition
Many students, including older ones, have trouble understanding how basic addition works. Sometimes this is because they learned the procedure, but never really learned why it worked. Other times it's because they became used to doing every computation ...

3/4/2010
5.87 minutes

Updated Lesson 3: Place Value to 100
Place value is a confusing concept for many students, and many students don't fully understand what it means for a digit to be in a particular place. We use what is called a base-10 math system. What that means is that we use the digits 0 to 9 to repres...

3/4/2010
3.47 minutes

Updated Lesson 2: Numbers Written with Words
Numbers are often represented with words instead of symbols, and sometimes a test question is designed to see if you can recognize numbers in words. Additionally, in formal writing it is usually proper to spell out numbers that are less than 100. When w...

3/4/2010
2.92 minutes

Lesson 106d: One-Step Equations Involving Signed Numbers (Part 2)
In this lesson, you'll continue learning how to use algebra to solve equations with signed numbers and isolate the variable in one-step. It is important to know how to solve equations that contain fractions in one-step. Copyright © MathWithLarry.com

3/4/2010
4.60 minutes

Lesson 106c: One-Step Equations Involving Signed Numbers (Part 1)
In this lesson, you'll learn how to use algebra to solve equations with signed numbers and isolate the variable in one-step. Copyright © MathWithLarry.com

3/4/2010
9.55 minutes

Lesson 106b: Intro to Algebra (Part 3)
In this lesson, you'll learn how to use algebra to solve equations that have fractions by using division, multiplication and reciprocals. Copyright © MathWithLarry.com

3/4/2010
7.68 minutes

Lesson 106a: Intro to Algebra (Part 2)
In this lesson, you'll learn how to use algebra to solve equations with different type of operations: addition, multiplication, and division. Copyright © MathWithLarry.com

3/4/2010
9.17 minutes

Lesson 105: Intro to Algebra (Part 1)
We use algebra to find the value of variables in equations. Once you learn some procedures, it's easy to do. It's also easy to check your answers. Take a look at this equation: x - 5 = 2. It's called an equation because it has an equals sign. x is c...

3/4/2010
7.20 minutes

Lesson 102b: Multiplying and Dividing Signed Numbers
In this lesson you'll learn how to multiply and divide signed numbers. To summarize, multiplying same signs gives a positive answer. Multiplying opposite signs gives a negative answer. The numbers themselves don't matter. Just multiply them and then d...

3/4/2010
7.12 minutes

Lesson 102a: Subtracting Signed Numbers
In this lesson you'll learn how to subtract signed numbers. Subtracting signed numbers can be a bit tricky. Let's look at how to do 4 - 7. We start at 4 on a number line, and then move 7 to the left, since we're subtracting. We end up on -3. Here is ...

3/4/2010
9.67 minutes

Lesson 101: Adding Signed Numbers
Of course you already know how to add positive numbers. In later math, you'll need to work a lot with negative numbers. This lesson shows you how. Many students feel uncomfortable with negative numbers. They can sometimes be hard to relate to. How can...

3/4/2010
5.72 minutes

Lesson 59: Place Value to Billions and More Practice Rounding
In this easy lesson, we'll extend our place value chart all the way up to billions, and we'll get some more practice rounding. Some students think that billions are just a meaningless concept, but billions come up quite a bit. Government budgets (or def...

3/4/2010
4.33 minutes

Lesson 58: Parts of a Circle
It's important to learn some basic definitions involving circles, since these words will come up again and again. This video will introduce and explain lines, line segments, radius, diameter, circumference, and chords. Copyright © MathWithLarry.com

3/4/2010
4.35 minutes

Lesson 56: Parallelograms, Trapezoids, and Rhombuses
Introduction and explanation of shapes. A rhombus is basically a slanted square with all four sides having equal length. The parallelogram is basically a slanted rectangle with the top and bottom sides are of equal length, and the left and right sides a...

3/4/2010
3.18 minutes

Lesson 53: Order of Operations (PEMDAS)
When doing calculations, normally we work from left to right, just the same way that we read. However, there are some special rules which force us to sometimes do calculations in a different order. This is called the order of operations. Copyright © ...

3/4/2010
7.83 minutes

Lesson 47: Adding and Multiplying Even and Odd Numbers
This easy lesson discusses some important rules that always apply when adding and multiplying even and odd numbers. Studying these rules will help you check your math when you do mental calculations. Addition Properties •Even + Even = Even •Ev...

3/3/2010
2.67 minutes

Lesson 42: Commutative and Zero Properties of Multiplication
This short lesson is somewhat of a review of things that have been mentioned before, but they are worth isolating as a separate lesson. Copyright © http://www.MathWithLarry.com

2/18/2010
2.50 minutes

Lesson 40: Multiplying Two Digits by One Digit
Although an exam may allow you to use a calculator, it's very important to understand the procedure for multiplying, both how it works, and why it works. Copyright © MathWithLarry.com

5/30/2008
4.65 minutes

Lesson 39: Building a Multiplication Table
We saw the basics of a multiplication table back in Lesson 10. Review that lesson, and then you'll be ready to move on to extending the multiplication table. Copyright © MathWithLarry.com

5/30/2008
1.98 minutes

Lesson 38: Introducing Right Angles
The study of angles comes up again and again in math. This lesson introduces one of the most common: the right angle. Copyright © MathWithLarry.com

5/30/2008
1.55 minutes

Lesson 37: More About Fractions
Fractions come up again and again in math. In this lesson you'll learn a bit more about how they work. Begin by reviewing Lesson 20. Copyright © MathWithLarry.com

5/30/2008
3.75 minutes

Lesson 36: Estimating by Rounding
This lesson talks more about how to find answers by rounding. If a test question uses a phrase similar to "about how many," that's usually a clue that they expect you to do some rounding. Sometimes it's up to you to figure out how and what to round. Cop...

5/30/2008
4.80 minutes

Lesson 35: Intro to Number Line Problems
This lesson involves a variant of thermometer and bar graph problems. It's important to understand how to identify points on a number line which does not have every tick-mark labeled. Copyright © MathWithLarry.com

5/30/2008
3.55 minutes

Lesson 34: Reading a Thermometer and Ruler
Reading a thermometer or ruler is quite similar to reading a bar graph. This lesson shows you some examples, and discusses the basics. Copyright © MathWithLarry.com

5/30/2008
3.57 minutes

Lesson 33: Introduction to the Cartesian (x, y) Coordinate System
This lesson introduces you to a very common topic in math. Like most topics, it's quite easy once you understand it. This lesson explains the basics. Copyright © MathWithLarry.com

5/30/2008
3.15 minutes

Lesson 32: Relationship Between Place Values
This is an easy lesson which reinforces the concept of place values. Copyright © MathWithLarry.com

5/30/2008
2.60 minutes

Lesson 31: Defining Congruence
Many test questions are designed simply to see if you know the definition of the word congruent. In math, we use the term congruent to mean "exact same size and exact same shape". Copyright © MathWithLarry.com

5/30/2008
1.30 minutes

Lesson 30: Solving Basic Combination Problems
Many problems involves determining the number of combinations that can be formed by choose items from two groups. These problems are easy once you know how to solve them. Copyright © MathWithLarry.com

5/30/2008
2.93 minutes

Lesson 29: Introduction to Symmetry
Symmetry is a favorite topic among test-makers, and it's an easy topic once you understand what the word means. It's also a word that comes up somewhat often in everyday life, especially in matters involving art, photography, and design. Copyright © Mat...

5/30/2008
3.68 minutes

Lesson 28: Introduction to Rotation
Rotation is an easy topic in geometry. It requires a little bit of visualization, and a basic understanding of how angles in a circle are measured. This lesson introduces you to the basic concept. Copyright © MathWithLarry.com

5/30/2008
3.27 minutes

Lesson 27: Intro to Median, Mode, and Range
This is an introduction to the very basic concepts of statistics. You will likely encounter test questions that see if you know what these words mean. Copyright © MathWithLarry.com

5/30/2008
3.35 minutes

Lesson 26: Introduction to Area and Perimeter
The concepts of area and perimeter come up again and again in math, and also in everyday life. They are very useful terms to know, and are easy to understand. Copyright © MathWithLarry.com

5/30/2008
4.48 minutes

Lesson 25: Patterns Involving Multiplication
Many test questions ask you to find the missing number in a pattern that involves multiplication, or in some cases, to continue the pattern. Copyright © MathWithLarry.com

5/30/2008
3.93 minutes

Lesson 24: More Complicated Addition
Very often there is a need to add more than two numbers. The procedure is the same, but it requires a bit more work. This lesson explains. Copyright © MathWithLarry.com

5/30/2008
2.88 minutes

Lesson 23: Reading Simple Bar Graphs
It's important to know how to interpret the data in bar graphs. In the lesson we'll look at some simple ones, and later you'll work with more complex ones. Copyright © MathWithLarry.com

5/30/2008
3.32 minutes

Lesson 22: Names of Three-Dimensional Figures
It's important to know the names of three-dimensional figures. Later on in math, you'll learn how to do different computations involving those figures, but for now, it's important to know what they are called. Copyright © MathWithLarry.com

5/30/2008
3.23 minutes

Lesson 21: Place Value to 100,000
This is an easy lesson, since you already know place value to 100. This lesson is just an extension of the concept to 100,000. Copyright © MathWithLarry.com

5/30/2008
2.27 minutes

Lesson 20: Introduction to Fractions
Many students are very uncomfortable working with fractions. This is probably because they never properly learned what a fraction really is. Fractions are not difficult once you understand them. This lesson will explain. Copyright © MathWithLarry.com

5/23/2008
4.45 minutes

Lesson 19: Greater and Less Than
Many test questions in math ask you to determine which of two numbers is greater. We use the "<" and ">" symbols to represent this. Copyright © MathWithLarry.com

5/23/2008
2.47 minutes

Lesson 18: Assorted Word Problems
These word problems require different operations such as addition, multiplication, subtraction, and division. In each one, it's up to you to figure out which operation to use. The answers are explained in the video. Make sure that you can solve each pr...

5/23/2008
5.23 minutes

Lesson 17: Word Problems Involving Division
In this lesson you'll learn how to identity word problems that require division, and you'll learn how to solve them. Copyright © MathWithLarry.com

5/23/2008
2.70 minutes

Lesson 16: Word Problems Involving Multiplication
In this lesson you'll learn how to identity word problems that require multiplication, and you'll learn how to solve them. Copyright © MathWithLarry.com

5/23/2008
3.43 minutes

Lesson 15: Word Problems Involving Subtraction
In this lesson you'll learn how to identity word problems that require subtraction, and you'll learn how to solve them. Copyright © MathWithLarry.com

5/23/2008
3.07 minutes

Lesson 14: Word Problems Involving Addition
In this lesson you'll learn how to identity word problems that require addition, and you'll learn how to solve them. Copyright © MathWithLarry.com

5/23/2008
2.53 minutes

Lesson 13: Intro to Word Problem Terms
Word problems are common on exams, yet most students hate word problems most of all. The trick is to learn how to quickly and accurately convert the word problem into a problem in standard notation which you know how to solve. Copyright © MathWithLarry....

5/23/2008
2.62 minutes

Lesson 12: Rounding Numbers to the Nearest Ten
In math we are often asked to estimate sums, and this is also something that we do in real life. For example, in the supermarket, we might estimate how much our total bill will be. One way to estimate sums is by first rounding each number that we are ad...

5/23/2008
3.73 minutes

Lesson 11: Basic Division
Many students don't realize that division is nothing more than repeated subtraction. It's a shortcut so that we don't have to subtract the same number many times over. Division is also the opposite of multiplication. This lesson will teach you the basi...

5/23/2008
3.22 minutes

Lesson 10: Basic Multiplication
Many students don't realize that multiplication is nothing more than repeated addition. It's a shortcut so that we don't have to add the same number many times over. This lesson will teach you the basics. Copyright © MathWithLarry.com

5/23/2008
3.43 minutes

Lesson 9: Basic Subtraction
Many older students have trouble understanding how basic subtraction works. Sometimes this is because they learned the procedure, but never really learned why the procedure worked. Other times it's because they became used to doing every computation on ...

5/23/2008
5.30 minutes

Lesson 8: Names of Basic Shapes
It's important to know the names of various two-dimensional shapes. Copyright © MathWithLarry.com

5/23/2008
1.95 minutes

Lesson 7: Commutative Property of Addition
When adding two numbers together, it doesn't matter what order you add them in. This is because adding is just a way of combining. If I have 3 apples and my friend has 5, it doesn't matter if we do 3 + 5 or 5 + 3. Either way they add up to 8. This is ...

5/23/2008
1.40 minutes

Lesson 6: Even and Odd Numbers
It's important to be able to indentify even and odd numbers. Copyright © MathWithLarry.com

5/23/2008
1.78 minutes

Lesson 5: Skip Counting
It's very important to be able to do skip counting in various ways. For example, you should be able to start on 4, and then count by skipping two numbers. This would result in a pattern of 4, 7, 10, 13, etc. Stated another way, you are starting on 4, a...

5/23/2008
2.43 minutes

Lesson 4: Basic Addition Part 2
Many students, including older ones, have trouble understanding how basic addition works. Sometimes this is because they learned the procedure, but never really learned why it worked. Other times it's because they became used to doing every computation ...

5/23/2008
2.43 minutes

Lesson 4: Basic Addition Part 1
Many students, including older ones, have trouble understanding how basic addition works. Sometimes this is because they learned the procedure, but never really learned why it worked. Other times it's because they became used to doing every computation ...

5/23/2008
4.77 minutes

Lesson 3: Place Value to 100
Place value is a confusing concept for many students, and many students don't fully understand what it means for a digit to be in a particular place. We use what is called a base-10 math system. What that means is that we use the digits 0 to 9 to repres...

5/23/2008
2.68 minutes

Lesson 2: Numbers Written with Words
Numbers are often represented with words instead of symbols, and sometimes a test question is designed to see if you can recognize numbers in words. Additionally, in formal writing it is usually proper to spell out numbers that are less than 100. When w...

5/23/2008
2.08 minutes

Lesson 1: Introduction to Numbers
Many students have difficulty with higher grade level math, simply because they never learned the basic concepts of how numbers work. In some cases, students are not fully clear on what a number actually is. We see numbers every day, but we often ...

5/23/2008
1.75 minutes

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