en.wikipedia.org/wiki/Cube_(algebra)

In arithmetic and algebra, the cube of a number n is its third power: the result of
the number multiplied by itself twice: ... The inverse operation of finding a number
whose cube is n is called ext...

www.answers.com/Q/What_is_a_number_multiplied_by_itself_twice_called

A number which is multiplied by itself once is said to be <u>squared</u> = 5 x 5 =
25, also written as 52. This is called a square because if the sides of a ...

www.jiskha.com/search/index.cgi?query=A number multiplied by itself and then by itself again gives -1,000. What is the number?

A number plus itself, plus twice itself, plus 4 times itself, is equal to -104. .... a
number is called a perfect number if it equals the sum of all its factors except itself
.

www.montereyinstitute.org/courses/DevelopmentalMath/TEXTGROUP-1-19_RESOURCE/U01_L5_T1_text_container.html

The exponent, or power, tells how many times to use the base as a factor in the ...
This is because multiplying a number by itself is called “squaring a number.

math.stackexchange.com/questions/1605183/if-squaring-a-number-means-multiplying-that-number-with-itself-then-shouldnt-ta

The square root is really asking "What number should/did I multiply by itself to .....
the third power means multiplying a number with itself twice, not three times. ... R
part is called the root of the operation and the 2 is the square operation itself.

www.mathsisfun.com/square-root.html

To square a number, just multiply it by itself . ... (the little 2 says the number
appears twice in multiplying) ... 3, because when 3 is multiplied by itself we get 9.
... The Perfect Squares (also called "Square Numbers") are the squares of the
whole ...

www.math-prof.com/Pre/Pre_Ch_20.asp

A while back, we talked about a way to write a number times itself. Stuff like: 4<sup>2</sup> ...
The positive number square root is called the PRINCIPAL SQUARE ROOT. So
now we ... When we need to multiply a number twice, we don't need to write the 2.

burningmath.blogspot.com/2014/03/speed-multiplying-by-21-31-41-and-so-on.html

To multiply by 21: Double the number, append a '0' after that and add the original
number. ... The tens (2<sup>nd</sup> from right) digit of the answer will be twice the units digit
plus the 2<sup>nd</sup> -right digit of the given ... Squares of all integers are known as
perfect squares. ... The cube of a number is that number multiplied by itself t...

burningmath.blogspot.com/2013/11/multiplying-any-number-by-101.html

Mar 16, 2015 ... Write the 2-digit number next to itself i.e. write the number twice. Example: 52 ×
101 = 5252. Multiplying numbers more than 2-digit by 101. Rule: First, write ....
Squares of all integers are known as perfect squares. In this lesson ...

en.wikibooks.org/wiki/Cambridge_O_Level_Mathematics_(Syllabus_D)/Squares,_Square_Roots,_Cubes,_Cube_Roots

What this topic covers is square numbers and cubic numbers, fundamental
concepts in .... If we multiply a number itself twice is called a square of that
number.