Which term refers to a mathematical process such as addition, subtraction, multiplication, division, raising to a power, or finding the square root?

• A. Function
• B. Expression
• C. Algorithm
• D. Operation

Answer: (D)

This question tests understanding of a basic action in math. The term that names a mathematical action performed on numbers or expressions is operation. Operations include adding, subtracting, multiplying, dividing, raising to a power, and taking a square root—the exact actions you carry out to transform inputs into outputs.

A function is a rule that assigns outputs to inputs, though it can involve performing operations. An expression is a combination of numbers, variables, and operations that represents a value but doesn’t itself perform any action. An algorithm is a step-by-step method for solving a problem, describing the procedure rather than the single action itself.

So the listed items all describe actions you perform, which is why operation is the best fit.