Unit 2 Review

Name the Property

100

96 + 0 = 96

Identity Property of Addition

200

-17 + 92 = 92 + -17

Commutative Property of Addition

300

15 + (72 + 11) = (15 + 72) + 11

Associative Property of Addition

400

-22 x 13 x 112 = 112 x 13 x -22

Commutative Property of Multiplication

500

1 X -21.56 = -21.56

Identity Property of Multiplication

Distributive Property

100

6(11x - 3)

66x - 18

200

-7(-12x² - 9)

84x² + 63

300

6(-13x -4xy + 2y)

-78x - 24xy + 12y

400

-3(11a² - 5ab² + 9b - 4)

-33a² + 15ab² - 27b + 12

500

-7(-9a - 7ab + 12b + 2bc - 8c)

63a + 49ab - 84b - 14bc + 56c

Algebraic Expressions

100

How many terms in this expression?  2a² + 15a -19 

3

200

What is the constant? -47x³ + 32x² - 18x - 2

-2

300

What are the variables? -17x² + 61xy - 9y⁴ -5

x², xy, y⁴

400

What are the coefficients? 14a² - 6ab + b² -37

14, -6, 1

500

How many terms? What are the variables, coefficient, and constant? 64m³ -2m² + 14mn -81n² -7

Terms: 5

Variables: m³, m², mn, n²

Coef: 64, -2, 14, -81

Constant: -7

Combine Like Terms

100

8a +13 -4a +2

4a + 15

200

3x - 6xy + 8x +4xy

11x - 2xy

300

-7mn + 15n +2mn - 3n + 6

-5mn + 12n +6

400

43y + 28yz - 5y - 2z - 9z

38y + 28yz - 11z

500

-18.71x + 93.38xy + 25.87x -12.36xy - 49.8y

7.16x + 81.02xy - 49.8y

Simplify Expressions

100

2(5x - 6) + 7 + 4x

14x -5

200

-11y + 15 -4(8y + 3)

-43y + 3

300

-36 + 2(-10 + 15y) + 7y

-56 + 37y

400

14m + 3(6m + 9n + 4) -4n + 3

32m + 23n + 15

500

-6(9x - 5y) + 35x + 3(12y -2)

-19x + 66y - 6