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Central Tendency

100

Mean of 7, 10, 12, 11

(7+10+12+11)/4

40/4

= 10 

200

Median of 6, 15, 8, 19, 10

(sorted: 6, 8, 10, 15, 19) = 10

300

Mean of 19, 20, 17, 9

(19+20+17+9)/4

=16.25

400

Which measure of central tendency would be best for the set: 1, 1, 1, 30?

mode

500

Mode of 3, 5, 5, 8, 10

5

Algebraic Expression

100

Simplify 4x+3x.

4x + 3x = 7x

200

Add 2a² + 3a and a² + 5a

2a² + 3a + a² + 5a

= 3a² + 8a

300

subtract 7x+4 from 10x+2

 10x+2 -7x-4

= 3x-2

400

simplify (2m +6) - (7m-2)

2m+6-7m+2

=-5m +8

500

What is 5y -2y +9?

5y -2y +9 

= 3y +9

Law of Exponents

100

Simplify (x²) * (x³)

x^{2 + 3}

=x⁵

200

Simplify (y⁵ / y²)

y^5-2

⁼y³

300

What is (a³)²?

a⁶

400

Simplify (2x²)³

(2)³(x²)³

^{= 2x2x2} 

=8x⁶

500

What is 2⁴

2 x 2 x 2x 2

=16

Polynomials & Factoring

100

Factor x²+5x+6

(x+2)(x+3)

200

Factor a²-9

(a-3)(a+3)

300

Expand (x+3)²

x²+6x+9

400

Factor 2x² +8x

2x(x+4)

500

Expand (x+4)(x-2)

x²+2x-8

Rational Expressions

100

Simplify (6x/3)

2x

200

Simplify (x²-9) /(x+3)

x-3

300

Peform (2/x) + (3/x)

5/x

400

Simplify (3x/9x²)

1/3x

500

Subtract (x+5)/3  to (2x-3)/6

13/6