Mathematics for IGCSE & O level - Estimation (Section 3 - No. 18)
Which of the following is NOT an example of estimation?
Rounding a number to the nearest whole number.
Using a calculator to find an answer.
Approximating the square root of a number.
Rounding numbers to one significant figure.
คำอธิบาย
Using a calculator leads to the exact answer, not an estimate.