Question

How many significant figures are present in 2.500 and 0.0045?

Answer 1

Explanation:

1. 2 significant figure present. 2.2 significant figure present.

Answer 2

Answer:

$2.500$ has $4$ significant figures and $0.0045$ has $2$ significant figures.

Explanation:

• If a number ends with one or more zeros and these zeros are to the right of the decimal point then these zeros become significant.

Therefore $2.500$ has $4$ significant figures.

• Zeros written at the beginning of the number are not significant.

Therefore $0.0045$ has only $2$ significant figures.

Hence, $2.500$ has $4$ and $0.0045$ has $2$ significant figures.