1. n 2013 the Los Angeles Dodgers opening day payroll was about $2.16 × 10^8 and the Houston Astros opening day
payroll was about $2.4 × 10^7.
How much higher was the Dodgers’ payroll?
2. A TV show had 3.5 × 10^6 viewers for their first episode and 8.5 × 10^6 viewers for their second episode.
How many viewers did they have overall?
3. A dime is approximately 1.35 x 10^−1cm thick. The thickness of a dollar bill is approximately 1.2 x10^−2
How many times greater is the thickness of a dime than the thickness of a dollar bill?
4. A corporation earned a profit of $2.5 × 10^4 for 1 × 10^3 days in a row.
What was the corporation’s total profit during this time period?
5. Write a division problem in which two numbers written in scientific notation have a Sum of 5 x 10^-5.
1. The difference in the Dodgers' and Astros' opening day payrolls is:
$2.16 × 10^8 - $2.4 × 10^7 = $2.16 × 10^8 - $0.24 × 10^8 = $1.92 × 10^8
2. The total number of viewers for the TV show is:
3.5 × 10^6 + 8.5 × 10^6 = 12 × 10^6 = 1.2 × 10^7
3. The thickness of a dime is 1.35 x 10^-1cm and the thickness of a dollar bill is 1.2 x10^-2cm.
The thickness of a dime is: (1.35 x 10^-1) / (1.2 x 10^-2) = 1.35 / 1.2 = 1.125 times greater than the thickness of a dollar bill.
4. The total profit of the corporation during the time period is:
$2.5 × 10^4 * 1 × 10^3 = $2.5 × 10^7
5. Division problem:
2.5 x 10^-5 / 2.5 x 10^-5 = 5 x 10^-5 / 1