Unit 5 TEST: Rational #s; Exponent Laws; Scientific Notation

Which number is irrational?

• 9.6
• √45
• 3/8
• 3.4 x 10 ⁵

Tags

CCSS.8.NS.A.1

Write the answer in scientific notation.

4.1 x 10⁵ + 5.5 x 10⁶ =

• 5.91 x 10⁶

• 9.6 x 10⁵

• 9.6 x 10¹¹

• 4.65 x 10⁵

Tags

CCSS.8.EE.A.4

√3  

• rational
• irrational

The √98 falls between what two numbers on a number line?

• 10 and 11
• 11 and 12
• 9 and 10
• 90 and 100

Tags

CCSS.8.NS.A.2

Zero

• Rational, Integer
• Rational
• Rational, Integer, Whole
• Rational, Integer, Whole, Natural

Which is the best rational approximation for  $\sqrt{55}$  ?

• 7.5

• 27.5

• 5.5

• 11.0

Tags

CCSS.8.NS.A.2

A rectangular section of land made up of wheat farms has a length of 5 X 10⁴ meters and a width of 6 X 10³ meters What is the area of the land in square meters?

• 3 X 10⁶ m²

• 3 X 10⁷ m²

• 3 X 10⁸ m²

• 3 X 10¹² m²

Tags

CCSS.8.EE.A.4

Divide:
(6.9 x 10⁷) / (2.3 x 10^-3)

• 3 x 10¹⁰
• 3 x 10⁴
• 3 x 10^-4
• 3 x 10^-11

Tags

CCSS.8.EE.A.4

Simplify (-4r⁵)(2r⁸)

• -8r¹³
• -2r¹³
• -8r⁴⁰
• -2y⁴⁰

Tags

CCSS.HSA.APR.A.1

Match the following exponent rules.

• For any nonzero number, a^0 = 1

• Power of Powers Property

• keep the base and multiply the exponents

• Zero Exponent Property

• keep the base, subtract the exponents

• Negative Exponent Property

• For every nonzero number, a^-n = 1/a^n

• Power of Products Property

• Multiply the bases and keep the exponent

• Quotient of Powers Property

Tags

CCSS.8.EE.A.1