Pre Alg Exam Review

Rational Number Operations

100

(-5) + 8 - 10 + (-9)

-16

200

3/8 + 6/8

9/8

300

0.35 + 8/10

1.15 or 23/20

400

4/5 divided by 6/7

14/15

500

(17/34 + 9/18) Divided by 4.

1/4

Exponents/Sci Not

100

14²

196

200

Square root of 484

22

300

a⁴ x a⁸

a¹²

400

Write 12,550,000 in scientific notation

1.255 x10⁷

500

What is 7.08x10^-5 in standard form?

0.0000708

Expressions

100

3s + 10 - s + 18

2s + 28

200

Distribute -4(3b - 13)

-12b + 52

300

Distribute and combine

-(2y - 4) + 4(5y - 8)

18y - 28

400

Evaluate the expression if a=-6

(a² - 5) + 4(3a + 10)

71

500

Write an expression for the following statement:

"Connor is six more than half his brothers age." 

1/2x + 6 or 0.5x + 6

Equations

100

2x + 4 = 10

x = 3

200

3(-5x + 11) = -27

x = 4

300

2x -4 = 3x + 18

-22

400

Write and solve an equation:

Jerry spent a total of $1115 on Amazon this year. If her spent $942 on goods, how much did his monthly subscription cost?

12x + 942 = 1115

x = $14.42

500

Three consecutive even numbers add up to 78. What are the three numbers? Write and solve the equation to find the answer.

x + x+2 + x + 4 = 78

24,26,28

Triangles and angles

100

Explain the triangle sum theorem 

The sum of interior angles of a triangle equal 180 degrees

200

Explain the remote interior angle postulate 

The sum of two remote interior angles are equal to an exterior angle of the 3rd angle of the triangle. 

300

What are the angle measures of an equilateral triangle?

60 degrees

400

What is the missing angle of triangle ABC if angle A is 25, Angle B is 63, and angle C is x?

92

500

A triangle has an exterior angle that is 2x + 5 degrees. If the two remote interior angles are x for one of them, and 2x -12 for the other. What is the value of x?

17