Big & Small Numbers

Scientific Notation

100

Write 4,500,000 in scientific notation.

4.5×10⁶

200

Write 72,000,000 in scientific notation

7.2×10⁷

300

Write 0.0000062 in scientific notation.

6.2×10^-6

400

Write 0.000000084 in scientific notation.

8.4×10^-8

500

Write 9,350,000,000,000 in scientific notation.

9.35×10¹²

Best Approximation

100

There are about 31,500,000 seconds in one year. What is the best approximation in scientific notation?

3×10⁷

200

A city has a population of 8,730,000 people. What is the best approximation in scientific notation?

9×10⁶

300

The distance from Earth to the Sun is about 149,600,000 km. What is the best approximation?

1×10⁸

400

A tiny organism measures 0.0000047 meters. What is the best approximation in scientific notation?

5×10^-6

500

A star is approximately 9,460,000,000,000 km away. What is the best approximation?

9×10¹²

How Many Times Greater?

100

Quantity A is 6×10⁵ . Quantity B is 3×10⁵ 

How many times greater is A than B?

2 times

200

Quantity A is 8×10⁷ . Quantity B is 4×10⁶ 

How many times greater is A than B?

20 times

300

Quantity A is 6×10⁹ . Quantity B is 3×10⁷ 

How many times greater is A than B?

200 times

400

Quantity A is 7×10¹² . Quantity B is 7×10⁸ 

How many times greater is A than B?

10,000 times

500

Quantity A is 4×10³ . Quantity B is 4×10^-6 

How many times greater is A than B?

1,000,000,000 times