How many significant figures are in the measurement 0.00450?

Answer 1

The significant figure (sig fig) of every number is the first number in it that isn't naught. The first number in 23.00 is 20. Each number after the first sig fig is also counted as a sig fig, not depending on weather or not it is a naught.

Answer 2

4 - provided the two 0s after the decimal point are there to indicate a degree of precision.

Answer 3

there are 4 significant figure in 0.02340

Answer 4

4

Answer 5

3 of them.

Answer 6

3.

Answer 7

3