Multiplication and Division for Scientific Notation

(5 x 10⁶)(5 x 10⁷)

• 2.5 x 10¹²

• 2.5 x 10¹⁴

• 25 x 10¹²

• 25 x 10¹³

When you are multiplying two numbers in scientific notation, do you need to make the exponents match?

• Yes

• No

In the year 2000, the United States public debt was about 5.6 x 10¹² dollars. The population of the United States in that year was about 2.8 x 10⁸ people. What operation would you use to determine the average debt per person?

• Addition

• Subtraction

• Multiplication

• Division

A rectangular section of land made up of wheat farms measures 5 x 10⁴ meters and a width of 6 x 10³ meters. What is the area of land in square meters? [Area = length x width]

What operation do you use?

• addition

• subtraction

• multiplication

• division

(2.8 * 10⁸) (2.2*10³)

• 6.16 * 10²⁴

• 5.0 * 10¹¹

• 6.16 * 10¹¹

• 61.6 * 10¹¹

(9.6 * 10⁴)(6.5 * 10²)

• 6.24 * 10⁷

• 62.4 * 10⁶

• 6.24 * 10⁸

• 6.24 * 10²

5 x 10¹²
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2 x 10⁶

• 2.5 x 10²

• 2.5 x 10⁶

• 3 x 10²

• 2.5 x 10¹⁸