en.wikipedia.org/wiki/Addition

Addition is one of the four basic operations of arithmetic, with the others being
subtraction, .... The plus sign "+" (Unicode:U+002B; ASCII: + ) is an
abbreviation of the ... The ...

www.mathsteacher.com.au/year8/ch01_arithmetic/01_basic/oper.htm

These operations are addition, subtraction, multiplication and division. Both the ...
Adding two (or more) numbers means to find their sum (or total). ... Also, we can
say that 17 minus 8 is 9. .... If you experience difficulties when using this Website,
tell us through the feedback form or by phoning the contact telephone number.

www.eduplace.com/math/mathsteps/4/a/

But what happens when an expression requires multiple operations? ... a set of
rules called the order of operations to determine which operation to do first. ...
Now that all multiplication and division has been completed, you would continue
by ...

www.skillsyouneed.com/num/bodmas.html

Find out how to decide in which order to do a sum, and the rules that apply when
you have multiple 'operations' to carry out.

www.sosmath.com/algebra/fraction/frac3/frac39/frac39.html

How do you calculate 2 + 3 x 7? Is the answer 35 or is the answer 23? To know
the correct answer, one must know the correct order of operations with respect to
...

www.factmonster.com/ipka/A0933340.html

Do you do the subtraction first (6 – 3 = 3) and then the multiplication (3 x 2 = 6)?
... a step before Subtraction, so first we multiply 3 x 2, and then subtract the sum ...

www.cliffsnotes.com/study-guides/basic-math/math-word-problems/translating-expressions/keywords-for-mathematical-operations

The word SUM OF is a leading keyword that defines AND, so underline the words
... Also notice that you do not simplify the expression and get “3” for the answer ...

www.purplemath.com/modules/fcnops.htm

For instance, when they give you the formulas for two functions and tell you to
find the sum, all they're telling you to do is add the two formulas. There's nothing ...

www.virtualnerd.com/algebra-2/radical-functions/operations-compositions/operations/sum-two-functions

Radical Functions · Operations on and Composition of Functions · Operations on
... function; operation; add ... Did you know that a relation has a domain?

www.khanacademy.org/math/algebra2/manipulating-functions/combining-functions/v/sum-of-functions

You could view f plus g as a new function that's created by adding the other two
functions. But when you view it ... We can say-- let me just get rid of the
parentheses. I'll just ... So you get 4x squared when you combine these two terms
. You only ...