Today we’ll be reading some mathematical expressions. How to read math? If you learn math, you will sooner or later (rather sooner, I would say) come across mathematical expressions. It may happen, especially if you are not a native speaker of English, that you don’t know how to read such expressions aloud. If you are a native speaker of English, then you probably attended a school in an English-speaking country where you had math classes, so you will probably be acquainted with all the basic mathematical expressions that are taught at school.
Anyway, math is a vast subject and there are lots of
mathematical expressions you may come across. This is why I had to make just an
arbitrary selection. Let’s start with something basic, numbers.
Table of Contents
How to Read Math? – Numbers
Reading numbers is generally one of the first things students of English, or any other language learn. A less common thing to learn is negative numbers and numbers with a decimal point. As far as former are concerned, there are two ways of reading them. Here’s how you read them:
five |
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negative five minus five |
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five point three four |
Fractions
A fraction consists of a numerator and a denominator. The general rule is to read the numerator (the number above the line) as a cardinal number) and the denominator (the number below the line) as an ordinal number. The denominator also takes a plural ending if the numerator is not 1. An alternative way is by using the preposition over between the numerator and denominator, which are then both expressed as cardinal numbers. Two special cases include the fractions with 2 and 3 in the denominator. Have a look:
one half |
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three quarters |
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one seventh one over seven |
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five sevenths five over seven |
Powers
A power consists of two parts: the base and the exponent. There are several ways of reading powers. We have two special cases. These are the powers where the exponent (the number written as an upper index) equals 2 or 3. With other exponents there are also basically two ways of reading them.
three squared the square of three |
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two cubed the cube of two |
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five to the power of four five (raised) to the fourth power |
Roots
With roots we also have two special cases, very much like with powers. Here’s how you can read roots:
the square root of four |
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the cube root of eight |
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the fourth root of sixteen |
How to Read Math? – Comparisons
Now some operators. Numbers are often compared. Here’s how you can compare them:
a is equal to b |
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a is greater than b |
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a is less than b |
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a is greater than or equal to b |
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a is less than or equal to b |
Operations
And here are the basic operations: addition, subtraction, multiplication and division:
a plus b |
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a minus b |
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a times b a multiplied by b |
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a divided by b |
Functions
Functions are a broad topic. When reading about functions, though, you will often see the following:
f of x |
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f following g |
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x approaches 0 x tends to 0 |
Symbols and Operators
There are also lots of various symbols and operators in math. Here are some examples:
x is an element of A |
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if and only if |
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the absolute value of x |
How to Read Math? – Miscellaneous
And finally some more examples which didn’t fit in any of the categories above.
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the logarithm of twenty-five in base five |
n factorial |
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the sum of a i for i from 1 to n |
So, this is how basic math is read. But this is really just the basic stuff. You may also want to watch the video version: