Simplify 0.000215 x 0.000028 and express your answer in standard form
- 6.03 x 109
- 6.02 x 109
- 6.03 x 10-9
-
6.02 x 10-9
The correct answer is: D
Explanation
0.000215215 x 0.000028= 215 x 10-4 x 28 x 10-4
= 215 x 28 x 10-6-6
= 6020 x 10-12
= 6.020 x 103 x 10-12
= 6.02 x 103 - 12
= 6.02 x 10-9