There are three different types of equal signs. Exactly equal is the one we’re all familiar with, but did you know there is a vertical equal sign, as well an approximately equal symbol. If you didn’t know yet, there is also less than or equal to symbol.
In this chapter, we will introduce you to each of these symbols and show you where they are used.
Check out the interactive simulations to know more about the lesson and try your hand at solving a few interesting practice questions at the end of the page.
What is Equal Sign?
The Equal sign is a sign of "Equality." Definition says that it is a mathematical symbol that is used to show equality in a distinct sense. So mathematically speaking, whenever we try to show equality between two expressions, we tend to "equate" the two items. Hence, the equal sign is the sign that helps us to mathematically show equality between two symbols.
What is the Symbol of Equal to Sign
The symbol used to show the equal to sign is \(=\) (two parallel horizontal lines).
This symbol is only used when the two quantities to be compared are exactly the same. There are different symbols for each comparison aspect.
Click on the comparison aspects given here to know the symbols that are used.
Here is a list of some of the most commonly used comparison terms and their meanings:
|Equal to||Exactly the same|
|Not equal to||Not exactly the same|
|Approximation||Almost the same|
|Congruent||Exactly the same appearance (shapes)|
|Similarity||Same shapes, not exactly the same|
|Greater than equal to||Greater than OR equal to|
Use of Equal to Sign in An Equation
The symbol of equal to is used to show the exact same amount of any two different quantities.
For example, if we know that the price of 1 pound of meat is exactly $3, we can say that
Price of 1 pound of meat \(=$3\)
Keep in mind here that only exact values are to be given when using the equal to sign.
Which of the following is the symbol used for showing that two quantities are exactly equal?
a) \(\approx \)
We know that two parallel horizontal lines show that the quantities are exactly same.
|\(\therefore\) The symbol is \(=\)|
Mathematically speaking, if we say that the total worth of 3 oranges is exactly the same as that of 2 apples, then what mathematical operation should we use?
a) Approximate symbol
b) Similar symbol
c) Equal to symbol
d) Congruent symbol
We know that when the two quantities to be compared are exactly the same, we will use the equal to symbol.
|\(\therefore\) We will use equal to symbol.|
If the price of a house is nearly $30,000, can you represent it mathematically?
We know that nearly does not mean exactly equal.
Hence, we will use the approximately equal sign \(\approx\).
So we can say mathematically that the price of house is \(\approx\) $30,000
|\(\therefore\) The price of house is \(\approx\) $30,000|
If the radii of two different circles are exactly the same, can we say that the two circles are equal?
We know that in terms of shapes, we cannot use equal to sign.
Hence, we cannot say that circles are equal.
We use congruency for shapes and geometry-related equalities.
So, we can say that the circles are congruent.
|\(\therefore\) The circles are not equal; they are congruent.|
Emma and Emily are identical twin sisters. So, both of them have the same appearances.
Now, Emma is comparing herself to Emily while she says "We both are equal."
Is she correct to use the word "equal" for their appearances?
We know that equality can be used while comparing. But, having similar appearances doesn't make them equal.
For appreances, we use the word "similar."
|\(\therefore\) They are "similar."|
Here are a few activities for you to practice.
Select/Type your answer and click the "Check Answer" button to see the result.
We hope you enjoyed learning about Equal Sign with the simulations and practice questions. Now you will be able to easily solve problems on equal sign meaning, vertical equal sign, approximately equal symbol word, and less than or equal to sign.
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Frequently Asked Questions (FAQs)
1. What is an equal sign called?
The equal sign is called \(=\)
2. How to type an equal sign?
To type an equal sign on the keyboard, press "Shift" + "+" on your keyboard.
3. What is the approximate symbol called?
The approximate symbol is called \(\approx \).