Question

(

3.9
×
10
−
5
)
(
7
×
10
−
3
)

Answer 1

2278

Explanation:

(3.9×10−5)(7×10−3)

= (39 - 5)(7 x 10 -3)

= (39 - 5)(70-3)

= 34(70-3)

= 34 x 67

= 2278