Mathematics for IGCSE & O level - Estimation (Section 2 - No. 28)
When calculating the result of a multiplication problem by rounding to 1 significant figure, why is this method useful?
It will produce the most accurate result.
It will provide an easy calculation
It makes the solution more complex.
It provides an exact result.
Shpjegimi
Rounding to one significant figure makes calculation much easier.