A number that is not exact; a careful guess is called what?

A number that is not exact; a careful guess is called what?

• A. Estimate
• B. Idea
• C. Approximation
• D. Calculation

Answer: (A)

Estimating means giving a close, reasonable number when you don’t need the exact one. A careful guess that is close to the real value is called an estimate. This helps you check if your answer makes sense and makes mental math easier, like figuring roughly how many toys fit in a box or how much money you might need. An idea isn’t a number, and a calculation gives an exact result. An approximation is also a close value, but in everyday math, the word that best matches “a careful guess of a non-exact number” is estimate.

Estimating means giving a close, reasonable number when you don’t need the exact one. A careful guess that is close to the real value is called an estimate. This helps you check if your answer makes sense and makes mental math easier, like figuring roughly how many toys fit in a box or how much money you might need.

An idea isn’t a number, and a calculation gives an exact result. An approximation is also a close value, but in everyday math, the word that best matches “a careful guess of a non-exact number” is estimate.