Pre-Algebra Unit 2 Test Review

Translating Expressions

100

"the quotient of a number and -4"

n/-4

200

"the difference of twice a number and 9"

2n - 9

300

"27 less than the product of a number and 5"

5n - 27

400

"earning $8 an hour plus tip"

8h + t

500

"five subtracted from two times a number"

2n - 5

Simplifying Expressions

100

18 - 6x + 5x - 11

-x + 7

200

-2a - 6 + 15a - 21 + 5

13a - 22

300

7m + 19m - 11n - 4m + 3n

22m - 8n

400

6(w + 12)

6w + 72

500

-4(2p - 7)

-8 + 28

Factoring Expressions

100

Factor the expression. If it cannot be factored, write "prime."

3x - 15

3(x - 5)

200

Factor the expression. If it cannot be factored, write "prime."

10c - 10

10(c - 1)

300

Factor the expression. If it cannot be factored, write "prime."

9r + 24

3(3r + 8)

400

Factor the expression. If it cannot be factored, write "prime."

40a + 24b

8(5a + 3b)

500

Simplify, then factor the expression. 

-7m - 16 + 9m + 2

2(m - 7)

Monomials and Polynomials

100

Positive exponents only.

-14m³n² - 2m³n²

-16m³n²

200

Positive exponents only.

(-8p³q⁷)(2p^-1q^-7)

-16p²

300

Positive exponents only.

48k²⁰/-8k⁴

-6k¹⁶

400

Positive exponents only.

(9c⁴d⁷)²

81c⁸d¹⁴

500

Positive exponents only.

(-6a⁵b⁷)² - 17a¹⁰b¹⁴

19a¹⁰b¹⁴

Scientific Notations

100

Evaluate the expression. Answer in scientific notation.  

(5.8 x 10⁷)(6 x 10²)

3.48 x 10¹⁰

200

Evaluate the expression. Answer in scientific notation.

(3.7 × 10^-8)(2.9 × 10⁶)

1.073 × 10^-1

300

Evaluate the expression. Answer in scientific notation.

(2 × 10³) ÷ (6.4 × 10⁹)

3.125 × 10^-7

400

Evaluate the expression. Answer in scientific notation.

(1.9 × 10⁵) ÷ (2.5 × 10^-9)

7.6 × 10¹³

500

Evaluate the expression. Answer in scientific notation.

(4.5 × 10^-6) + (9.2 × 10^-7)

5.42 × 10^-6