Multiple Choice
Solve each problem and write your answers in scientific notation.
(6.0 x 105) x (3.0 x 104) =
A. 18 x 1020
B. 18 x 109
C. 1.8 x 1020
D. 1.8 x 1010
(5 x 10–2) ÷ (2 x 103) =
A. 2.5 x 10-5
B. 2.5 x 10-1
C. 25 x 101
D. 25 x 102
(2.56 x 106) x (3.56 x 102) =
A. 9.1136 x 1012
B. 91.136 x 108
C. 9.1136 x 108
D. 91.136 x 1012
In a recent year, the population of California was about 2.52 x 107 people. Its land area is about 4.05 x 105 km2. What was the average number of people per square kilometer?
A. 0.62 x 105
B. 6.2 x 101
C. 0.62 x 1014
D. 6.2 x 109
63 answers