Grade 8: Unit 1 - Expressions and Equations & the Number System

In scientific notation, what is the sum of 2.3 X 10^-3 and 5.4 X 10^-4?

• 2.84 X 10^-3

• 5.63 X 10^-3

• 7.7 X 10^-7

• 12.42 X 10^-12

Which does not equal 0 and 1?

• A

• B

• C

• D

Simplify ( 3³ X 5³ ) ^-2

• 1

  15¹²

• 1

  15⁶

• 15^-18

• 15⁴

On a scientific calculator, 3 X 10⁵ is displayed as "3 EE 5". How would the product of 80,000 and 5,000 be displayed on the calculator

• 4 EE 8

• 8,5 EE 4

• 7,5 EE 4

• 1.6 EE 1

1 is a:

• Perfect squares but NOT perfect cubes

• Perfect squares AND perfect cubes

• Perfect cubes but NOT perfect squares

27 is a:

• Perfect squares but NOT perfect cubes

• Perfect squares AND perfect cubes

• Perfect cubes but NOT perfect squares

64 is a:

• Perfect squares but NOT perfect cubes

• Perfect squares AND perfect cubes

• Perfect cubes but NOT perfect squares

81 is a:

• Perfect squares but NOT perfect cubes

• Perfect squares AND perfect cubes

• Perfect cubes but NOT perfect squares

100 is a:

• Perfect squares but NOT perfect cubes

• Perfect squares AND perfect cubes

• Perfect cubes but NOT perfect squares

1,000 is a:

• Perfect squares but NOT perfect cubes

• Perfect squares AND perfect cubes

• Perfect cubes but NOT perfect squares