Mid Year Review 8th grade Math

What is 5³ written in standard form?

• 15

• 125

• 25

• 5 x 5 x 5

Tags

CCSS.6.EE.A.1

What is 6² x 6⁷ written as an exponent?

• 6⁹

• 6¹⁴

• 6 x 6 x 6 x 6 x 6 x 6 x 6 x 6 x 6

• 10,077,696

Tags

CCSS.8.EE.A.1

• x⁴
• x⁸
• x¹²
• x²⁰

Tags

CCSS.8.EE.A.1

According to exponent rules, when we raise a power to a power we _______ the exponents.

• add

• subtract

• multiply

• divide

Tags

CCSS.8.EE.A.1

What is (4.3 x 10⁴) x (5 x 10³) written in scientific notation?

• 8.3 x 10⁷

• 21.5 x 10⁷

• 2.15 x 10⁶

• 2.15 x 10⁸

Tags

CCSS.8.EE.A.4

Whole numbers are natural numbers together with "zero."

• True
• False

A number can be rational and irrational.

• True
• False

What is true about irrational numbers?

• They are terminating decimals.
• They are non-repeating decimals.
• They are fractions.
• They are natural numbers.

Tags

CCSS.8.NS.A.1

Which of the following statements is always true?

• All integers are whole numbers
• all rational numbers are integers
• some whole numbers are not rational numbers
• all whole numbers are integers

Solve for x.
10-5x+3x= 5 - x

• 5
• -2.5
• -5
• 10