Counting example
How Many Significant Figures Are in 0.00450?
0.00450 has 3 significant figures: 4, 5, and the trailing zero after the decimal.
Question
0.00450
Answer
0.00450 has 3 significant figures.
Step-by-step explanation
1
Leading zeros before 4 are not significant.
2
The digits 4 and 5 are non-zero, so they are significant.
3
The final zero is after the decimal and after a non-zero digit, so it is significant.