Round off each of the following numbers to the indicated number of significant digits and write the answer in standard scientific notation. A). 4341 * 10^2 to three significant digits B). 93.441 * 10^3 to three significant digits C). 0.99155 * 10^2 to four significant digits D). 9.3265 to four significant digits

Significant figures are the number of digits in a value that contribute to the degree of accuracy of the value.

To count the significant figures the following rules are considered into account:

1) All non zero digits are significant.

Example: In 123.1 there are four significant figures.

2) Zeros between two nonzero digits are significant.

ex: In 102, there are three significant figures.

3) Leading zeros (left side zeros) are not significant.

ex: In 0.00245 there are three significant digits.

4) Zeros that are right side of a decimal are significant.

ex: In 0.00240   there are three significant figures.

5) Zeros that are right side of a number and without a decimal are not significant.

In 200 there is only one significant figure.