Question

Which of the following is equivalent to
(
5
×
10
3
)
+
(
4
×
10
6
)
?
A.
4
.
005
×
10
6

B.
9
×
10
6

C.
4
.
005
×
10
9

D.
9
×
10
9

Answer 1

A. 4.005 × 10^6

Reason: 5×10^3 = 0.005×10^6, so (4×10^6)+(5×10^3) = (4+0.005)×10^6 = 4.005×10^6.