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Compute — Definition, Meaning & Examples

Compute

To figure out or evaluate. For example, "compute 2 + 3" means to figure out that the answer is 5.

Worked Example

Problem: Compute 4 × (7 + 3) − 10.
Step 1: Evaluate the expression inside the parentheses first.
7+3=107 + 3 = 10
Step 2: Multiply by 4.
4×10=404 \times 10 = 40
Step 3: Subtract 10.
40−10=3040 - 10 = 30
Answer: The computed value is 30.

Why It Matters

"Compute" is one of the most common instruction words in math problems, standardized tests, and textbooks. Recognizing it tells you that a definite numerical or algebraic answer is expected — not an estimate, not a graph, and not a proof. Understanding this directive helps you focus on performing exact calculations rather than approximating or explaining.

Common Mistakes

Mistake: Confusing "compute" with "estimate" and giving an approximate answer instead of an exact one.
Correction: When a problem says "compute," work through the full calculation and give the precise result. Use "estimate" only when the problem explicitly asks for an approximation.

Related Terms

  • Evaluate — Synonym meaning to find the value of
  • Simplify — Reduce an expression to simpler form
  • Expression — A mathematical phrase you may compute