Question

write number of significant figures in following (a)0.0230,(b)5.012,(c)1456,(d)0.0012​

Answer 1

(a) 0.0230 = 3

(b) 5.012 = 4

(c) 1456 = 4

(d) 0.0012 = 2

To determine the number of significant figures in a number use the following 3 rules:

• Non-zero digits are always significant

• Any zeros between two significant digits are significant

• A final zero or trailing zeros in the decimal portion ONLY are significant

Example:  

• 0.500 or 0.632000 the zeros are significant .

• 0.006 or 0.000968 the zeros are NOT significant.

Answer 2

Answer:

(a)0.0230 =3

(b)5.012 =4

(c)1456 = 4

(d)0.0012 =2

. Non-zero digits are always significant.

. Any zeros between two significant digits are significant.

. A final zero or trailing zeros in the decimal portion ONLY are significant.