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Symbols Representing Operations
+	add
The result of + is called the sum Example: The sum of 2 and 3 = 2 + 3 = 5 MORE maths.com/addition
-	subtract
The result of - is called the difference Example: The difference of 11 and 4 = 11 - 4 = 7 MORE maths.com/subtraction
×	multiply
The result of × is called the product Example: The product of 4 and 5 = 4 × 5 = 20 MORE maths.com/multiplication
÷	divide
The result of ÷ is called the quotient Example: The quotient of 30 and 5 = 30 ÷ 5 = 6 MORE maths.com/division
√ √9 = 3	square root square root 9 = 3 since 3 × 3 = 9 NOTICE THAT 3 is used twice
Square root of 1 is 1 Square root of 4 is 2 Square root of 9 is 3 Square root of 16 is 4 Square root of 25 is 5 Square root of 36 is 6 Square root of 49 is 7 Square root of 64 is 8 Square root of 81 is 9 Square root of 100 is 10
The square root of $variable_a = $result since $result × $result = $variable_a"; ?>
External Link How To Calculate The Square Root Of A Number
∛ ∛8 = 2	cube root cube root 8 = 2 since 2 × 2 × 2 = 8 NOTICE THAT 2 is used 3 times
Cube root of 1 is 1 Cube root of 8 is 2 Cube root of 27 is 3 Cube root of 64 is 4 Cube root of 125 is 5 Cube root of 216 is 6 Cube root of 343 is 7 Cube root of 512 is 8 Cube root of 729 is 9 Cube root of 1000 is 10
External Link How To Calculate The Cube Root Of A Number
∜ ∜(625)	fourth root fourth root 625 = 5 since 5 × 5 × 5 × 5 = 625 NOTICE THAT 5 is used 4 times
Fourth root of 1 is 1 Fourth root of 16 is 2 Fourth root of 81 is 3 Fourth root of 256 is 4 Fourth root of 625 is 5 Fourth root of 1296 is 6 Fourth root of 2401 is 7 Fourth root of 4096 is 8 Fourth root of 6561 is 9 Fourth root of 10000 is 10
External Link Earliest Uses of Symbols of Operation

Symbols Representing Relations Also Known As Symbols Representing Declarations
= x = y	equals is equal to is the same as x equals y
< x < y	is less than x is less than y
> x > y	is greater than x is greater than y
≤ x ≤ y	is less than or equal to x is less than or equal to y
≥ x ≥< y	is greater than or equal to x is greater than or equal to y
≠ x ≠ y	is not equal to x is not equal to y
<< x << y	is much less than x is much less than y
>> x >> y	is much greater than x is much greater than y
≅ x ≅ y	is approximately equal to x is approximately equal to y
≈ x ≈ y	is almost equal to is asymptotic to x is almost equal to y x is asymptotic to y
∝ x ∝ y	is proportional to x is proportional to y
≡ x + y ≡ y + x	is equivalent to x + y is equivalent to y + x
External Link Earliest Uses of Symbols of Relation

Symbols Representing Grouping
( )	parentheses round brackets
[ ]	brackets square brackets
{ }	braces curly brackets
External Link Earliest Uses of Grouping Symbols

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Created by Dr David Cornelius an Independent Private Maths Tutor with over 25 years of experience and The Secretary of The Association of Tutors in the UK for 15 years.