Exponents Math

Which of the following is correct scientific notation?

• 20.35 x 10⁴

• .2035 x 10⁴

• 2035 ⁴

• 2.035 x10⁴

Express the following in scientific notation:
.000457

• 457 x 10⁶

• 457 x 10^-6

• 4.57 x10⁴

• 4.57 x 10^-4

Convert to scientific notation:
520,000,000  

• 52 x 10⁷

• 5.2 x 10⁷

• 5.2 x 10⁸

• 0.52 x 10⁹

Multiply:
(3.4 x 10⁵)(1.2 x 10^-3)

• 4.08 x 10^-8

• 4.8 x 10²

• 4.08 x 10²

• 4.08 x 10^-15

Which one of these is in scientific notation?

• 8.987000

• 8.98 x 10⁶

• 80.987 x 10

• 8.98⁶

Which of the following numbers is the least?

• 7 x 10⁸

• 7.1 x 10⁸

• 7 x 10⁹

• 7.1 x 10⁹

Which of these numbers is the greatest?

• 5.406 x 10⁸

• 5.504 x 10⁷

• 5.604 x 10⁹

• 6.504 x 10⁸

The average U.S. resident uses 100 gallons of water per day.  The population of the U.S. is about 3.23×10⁸.  About how many gallons of water do U.S. residents use each day?

• 323×10¹⁰

• 3.23×10¹⁰

• 3.23×10⁹

• 3.23×10⁸

The √20 is between which two integers?

• 2 & 3

• 3 & 4

• 4 & 5

• 5 & 6

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