Mathematics for IGCSE & O level - Estimation (Section 2 - No. 38)
What is a good reason to round numbers to 1 s.f. before calculating?
To make it easier to multiply or divide mentally.
To make the answer more accurate.
To make the answer more complicated.
To impress your teacher.
คำอธิบาย
Rounding to 1 s.f. simplifies calculations.