Scientific Notation Review

Select all that are correctly written in scientific notation.

UNDERSTANDING

If the exponent is a negative number...

UNDERSTANDING

If the exponent is a positive number...

The average width of a piece of human hair is .0001m. What is this measurement in scientific notation?

In Australia, the people use approximately 2,240,000,000 pounds of bread in a year. How can we write this number in scientific notation?

Which is the largest?

4.8 x 10^-6

1.3 x 10²⁰

3.1 x 10^-4

9.2 x 10^-5

9.5 x 10³²

5.9 x 10^-5

2.9 x 10²¹

8.4 x 10¹⁹

Which is the largest?

4.8 x 10^-6

1.3 x 10²⁰

3.1 x 10^-4

9.2 x 10^-5

9.5 x 10³²

5.9 x 10^-5

2.9 x 10²¹

8.4 x 10¹⁹

Which is the smallest?

1.3 x 10²⁰

2.9 x 10²¹

9.5 x 10³²

8.4 x 10¹⁹

Identify the greater number in each pair:

1.25 x 10^-3 and 1.28 x 10^-5

Identify the greater number in each pair:

4.8 x 10^-7 and 8.8 x 10^-7

Identify the greater number in each pair:

9.9 x 10¹⁰ and 9.6 x 10¹¹

Identify the greater number in each pair:

5.8 x 10⁵ and 8.5 x 10³

The table shows the mass in grams of one atom of each of several elements. List the elements in order from the least mass to greatest mass per atom.

Solve:

(2.1×10​²​​) × (3.0×10​⁴)

Multiply:

(3.4 x 10⁵)(1.2 x 10^-3)

Solve:

(6 x 10⁶) / (2 x 10³)

Divide:

(6.9 x 10⁷) / (2.3 x 10^-3)

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?

The state of Colorado covers about 1.04 × 10⁵ square miles. The Indian Ocean covers about 2.808 × 10⁷ square miles. How many times bigger than Colorado is the Indian Ocean?

Students at Salt Lake Community College pay 1.585 ×10⁴ dollars for tuition. Students at George Washington University pay 4.573 ×10⁵ dollars. How many times greater is the tuition at George Washington?

The population of Crowded Town is 4 × 10⁶ and the population of Empty Village is 8 × 10³. How many times the population of Empty Village is Crowded Town?