Unit Test Review

A company sells various sized jewelry boxes that are in the shape of cubes.  Which volume of cubes has rational number side lengths?

• 8 in³
• 33 in³
• 1.5 ft³
• 3 yd³

If the area of a square is 81cm², what is the side length?

• 9cm
• 81cm
• 3cm
• 9cm²

What type of number is √7

• Rational
• Irrational
• Integer
• Imaginary

Which best describes an irrational number?

• Any number that can be expressed as a fraction
• A positive or negative whole number.
• A number that is a non-terminating, non-repeating decimal.
• A perfect square.

Which set of numbers contains only rational numbers?

• {2, 4.5, √16, ⅔}
• {-3, -2, √18, 4.2}
• {π, 4, 0.345329..., -√25}
• {√27, π, -√36, 7.234}

Estimate the value of √7 to two decimal places.

• 2.65
• 7.95
• 4.55
• 0.74

(5³)⁴

• 1/5¹
• 5⁷
• (5x5x5)(5x5x5)(5x5x5)
• 5¹²

bⁿ x b^m  = 

• b^nxm
• b^n-m
• b^n+m
• 2b^n+m

Which expression is NOT equivalent to the expression in the picture?

• 7⁸ / 7⁵
• (7)(7²)
• (7³)¹
• 21

Which expression is equivalent to the expression in the picture?

• 12 ⋅ 8
• (4)(4)(4)(4)(4)(4)
• 4⁵
• 20