Unit 1 Pre-algebra Review

Fractions, Decimals, Percents

100

-2 1/6 + 3 5/8

19/24

200

-3 5/7 x 3 8/9

-130/9  or -14 4/9

300

Write 19/25 as a decimal.

.76

400

Write 3/8 as a percent.

37.5%

500

Write 8% as a fraction in simplest form.

2/25

Exponents and Roots

100

Which number is not a perfect square?

A. 81       B. 169

C. 125     D. 289

 C

200

Which number is both a perfect square and a perfect cube?

A.  9              B.  64

C. 256           D. 512

B

300

Between which two consecutive integers does the square root of 52 lie?

7 and 8

400

Evaluate:  (-3)⁴ x 2⁹

41,472

500

Rewrite using positive exponents and simplify.

5^-2x⁸y^-1z⁰

x⁸/25y

Evaluate

100

-17 - 14

-31

200

56/-4

-14

300

6³ - 27(2) + (2⁵ - 4 x 5) =

174

400

xy²       (if x = 5 and y = -4)

80

500

3/8m + 2/3n           (if m = -4/9 and n = 5/6)

7/18

Properties

100

Which property is shown below?

3(w+9) = 3(9+w)

commutative property

200

Which property is shown below?

(7xy)1 = 7xy

identity property

300

Which property is shown below?

3(w - 4) = 3w - 12

distributive property

400

Which property is shown below?

(k + 6) + 2 = k + (6 + 2)

associative property

500

What is the additive inverse of 3/4?

-3/4

Real Numbers

100

Is the square root of 20 rational or irrational?

irrational

200

What whole number is not a natural number?

0

300

What is the smallest subset containing the square root of 100?

natural numbers

400

What is the smallest subset containing -25/5

integer

500

Name all of the sets with contain the cubed root of -512.

real, rational, integer