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I forgot my password. Sign up quickly and start your FREE trial. Rate this video. To Google. The author. Eugene Lee. Inequalities summary - Imagine a mouth Let's take another look at the different inequality symbols. Pay attention to the circle. You see the regarding number line beside. The fact, that Christopher spends less than 15 days on his trip, is represented by an empty circle.
This can be seen by the filled circle. At least indicates greater than or equal. The filled circle stands for less than or equal. First we consider number lines in general. Birthday party You like to invite less than 10 friends. You can imagine the greater than symbol as a mouth. The bigger number eats the larger one.
The order is changed. A circle indicates the number you have to use in the inequality. You use number lines to represent inequalities. First you draw a circle exactly at the position of the regarding number. More videos in Solving Equations. Clever Calculations with Money. One-Step Equations with Multiplication and Division. See how other students and parents are navigating high school, college, and the college admissions process.
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A Comprehensive Guide. Choose Your Test. How to Remember Greater Than and Less Than Signs Though the greater than and less than signs have clear meanings, they can be kind of hard to remember. Alligator Method One of the best ways to memorize the greater than and less than signs is to imagine them as little alligators or crocodiles , with the numbers on either side representing a number of fish. Have friends who also need help with test prep?
Share this article! Melissa Brinks. When I write 1 plus 1 equals 2, that literally means that what I have on the left hand side of the equal sign is the exact same quantity as what I have on the right hand side of the equal sign. I could have just as easily have written 2 is equal to 1 plus 1. These two things are equal.
I could have written 2 is equal to 2. This is a completely true statement. I could have written 1 plus 1 is equal to 1 plus 1. I could have written 1 plus 1 minus 1 is equal to 3 minus 2. These are both equal quantities. What I have here on the left hand side, this is 1 plus 1 minus 1 is 1 and this right over here is 1.
Now I will introduce you to other ways of comparing numbers. The equal sign is when I have the exact same quantity on both sides. Now we'll think about what we can do when we have different quantities on both sides. So let's say I have the number 3 and I have the number 1 and I want to compare them.
So clearly 3 and 1 are not equal. In fact, I could make that statement with a not equal sign. So I could say 3 does not equal 1. But let's say I want to figure out which one is a larger and which one is smaller. So if I want to have some symbol where I can compare them, where I can tell, where I can state which of these is larger. And the symbol for doing that is the greater than symbol. This literally would be read as 3 is greater than 1. And if you have trouble remembering what this means-- greater than-- the larger quantity is on the opening.
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