Question

0.205 -0.2014 can be expressed as (1) 0.0036 (2) 3.6 10-3 (3) 4.0 * 10-3 (4) 4 x 10-3​

Answer 1

Answer:

(4) 4 * 10^-3

Explanation:

0.205(3 places after decimal)- 0.2014(4 places after decimal)

= 0.0036(4 places after decimal)

According to addition rule, the result should be rounded off to least decimal places in the given numbers.

The least value of numbers after decimal is 3 here. So,

0.0036 = 0.004(1 significant figure)

Therefore, 4 * 10^-3(1 significant figure) is the answer