Lesson 21 Practice

If the exponent is a positive number the original number was...

• a really big number.

• a really small number.

Tags

8.EE.A.3

If the exponent is a negative number the original number was...

• a really large number.

• a really small number.

Tags

8.EE.A.3

Which value is the greatest?

• 5.0 x 10^-9

• 5.0 x 10^-4

• 5.0 x 10⁶

• 5.0 x 10⁸

Tags

8.EE.A.3

Which number is equivalent to 0.000 000 1?

• 10⁸

• 10⁷

• 10^-7

• 10^-8

Order the following numbers from least to greatest:

10⁵, 10^-99, 10^-17, 10^-5, 10³⁰

• 10⁵, 10^-99, 10^-17, 10^-5, 10³⁰

• 10³⁰, 10⁵, 10^-5, 10^-17, 10^-30

• 10^-5, 10⁵, 10^-17, 10³⁰, 10^-99

• 10^-99, 10^-17, 10^-5, 10⁵, 10³⁰

Write 9 x 10^-5 in standard form

• 0.0009

• 900,000

• 0.00009

• 90,000

In 2012, the population of New York State (NY) was about 2 × 10⁷ and the population of the State of Oregon (OR) was about 4 × 10⁷. How many times the population of OR is NY?

• 5

• 8 x 10¹⁴

• 2

• 0.5

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?

• 3.2 x 10¹⁰

• 500

• .002

• 2

What is an exponent?

• repeated multiplication

• repeated addition

• repeated subtraction

• repeated division

Which number is the BASE?
2³ = 8

• 2
• 3
• 8
• Ninja Turtles