Find the value of √6×10² +4×10¹ / 1.2×10^-2 +4×10^-3 ?

Answer:

8) E

To solve this simply, we just need to not use the figures given as standard form. Using the figures as they are may confuse a bit.
E.g. 6 x 102 600
We get:

600 + 40

0.012 + 0.004
640 0.016
√40,000 = 200