How we worked it out
Updated as you change the numbers.
- Leading zeros never count. Zeros between nonzero digits always count. Trailing zeros count only when there is a decimal point.
Method and assumptions
To show that trailing zeros in a whole number are significant, use scientific notation (1.20 × 10³ has three).
Questions
How many significant figures in 0.004050?
4 (4, 0, 5 and the final 0).
Sources
Method and figures checked on . Every worked answer on this page is covered by an automated test. Found a mistake? Tell us.