Question

How many significant figures are in the measurement 0.00440 grams?

Select one:
a. 6
b. 5
c. 3
d. 2

Answer 1

C. 3

All zeroes to the left of the first 4 are placeholders. You only count the numbers after the placeholders. Thus, the answer is 3 sig figs.

Answer 2

3. The  two 4's and the zero after the 4