Rounding small numbers to one significant figure

Rounding small numbers to one significant figure helps simplify calculations and make values easier to understand, especially when dealing with tiny measurements in science or engineering. For example, estimating the thickness of a hair or the diameter of a bacterium often requires rounding to make comparisons more practical! Jump to the questions

Practise now

Answer the following questions by rounding each small number (between 0 and 1) to one significant figure.