Question

Perform the indicated operations to correct significant figures:


a. 3.2+14.235


b. 27.482 - 27.4​

Answer 1

Answer:

The significant figures of a number are those digits that carry meaning contributing to its measurement resolution. This includes all digits except:

1. All leading zeros;

2. Trailing zeros when they are merely placeholders to indicate the scale of the number (exact rules are explained at identifying significant figures);

3. Spurious digits introduced, for example, by calculations carried out to greater precision than that of the original data, or measurements reported to a greater precision than the equipment supports.

(a)

0.007= 7×10

−3

Significant digit =7

Only one significant digit.

(b) Number of significant digit =3