Question

Reduce the following numbers to requisite number of significant digits: a. 2.34 × 10-4 ÷ 4.324 × 10-7 b. 45.60 + 23.55 + 6.312 – 10.9 c. (8.314 × 298)/1200​

Answer 1

Step-by-step explanation:

Solution

In this calculation 0.5 has minimum number of significant digits. It has only one significant digit. The result of this calculation is, therefore , to be rounded off to one significant digit.

(2.34×10−8)×(0.5)6.4

=1.17×10−86.4=0.1828125×10−8

Here 8, after 1 is greater than 5, so the result after rounding off is 0.2×10−8 .