Operations for Scientific Notation

A TV show had 3.5 × 10⁶ viewers for their first episode and 8.5 × 10⁶ viewers for their second episode. How many viewers did they have overall?

• 1.2 x 10⁷

• 1.2 x 10^-7

• 1.2 x 10⁶

• 1.2 x 10^-6

If a computer can perform an addition operation in 1.5 x 10^-6 seconds, how long will it take to perform 1500 such operations?

• 2.25 x 10^-3 seconds

• 2.25 x 10^-6 seconds

• 2.25 seconds

• 2.25 x 10⁶ seconds

A microgram is equal to 1 x 10 ^-6 grams. How many times greater than a microgram is 1 x 10² grams? 

• 1 x 10^-8

• 1 x 10^-4

• 1 x 10⁴

• 1 x 10⁸

In 1985 Earth had 4.9 ×10⁹ people living on it and in 2005, earth had 6.4 ×10⁹ living on it. How many more people inhabited Earth in 2005 than in 1985?

• 13 x 10⁹

• 1.13 x 10¹⁰

• 1.5 x 10⁸

• 1.5 x 10⁹

Write 8.73 x 10^-4  in standard form.

• 0.000873

• 0.0873

• 87,300

• 8,730

There are approximately 3.1 x 10⁸ people in the United States. If each person has 4.1 x 10¹ coins, how many coins are there altogether?

• 271 x 10¹⁰

• 271 x 10⁹

• 271 x 10¹¹

• 271 x 10⁸

Write 0.00000707 in scientific notation.

• 7.07 x 10^-6

• 7.07 x 10⁶

• 707 x 10⁸

• 707 x 10^-8

Write 6,700 in scientific notation.

• 6.7 x 10³

• 6.7 x10^-3

• 67 x 10²

• 67 x 10^-2

How would you write -5.6 x 10^-3 in standard form?

• 0.0056

• -5,600

• 0.00056

• -0.0056

A corporation earned a profit of $2.5 × 10⁴ for 1 × 10³ days in a row. What was the corporation’s total profit during this time period?

• 2.5 million

• 250 million

• 1.2 million

• 26,000