Unit 2 Review

Properties

100

What property is this?

2 + 3 = 3 + 2

Commutative Property of Addition

200

What property is this?

5 x (6 x 10) = (5 x 6) x 10

Associative Property of Multiplication

300

What property is this?

-4(2x + 5) = -8x - 20

Distributive Property

400

What property is this?

8 + (-8) = 0

Inverse Property of Addition

500

What property is this?

4 x 1 = 4

Identity Property of Multiplication

Order of Operations

100

6 + 5 x 2

6 + 10

16

200

(3² + 2) x 3

(9 + 2) x 3

11 x 3

33

300

8² - 8 + (10 x 2)

8² - 8 + (10 x 2)

8² - 8 + 20

64 - 8 + 20

56 + 20

76

400

(5 + 4²) / (2² - 1)

(5 + 16) / (4 - 1)

21 / 3

7

500

6² + 4 x 8 - 20 + (5² - 1)

6² + 4 x 8 - 20 + (25 - 1)

6² + 4 x 8 - 20 + 24

36 + 4 x 8 - 20 + 24

36 + 32 - 20 + 24

68 - 20 + 24

48 + 24

72

Evaluating Expressions

100

x² - 10 where x = 4

4² - 10

16 - 10

6

200

(2y + 6) - y where y = 3

(2(3) + 6) -3

(6 + 6) - 3

12 - 3

9

300

m(n + 3) where m = -4 and n = -8

-4(-8 + 3)

-4(-5)

20

400

(x - 4)² - y² where x = 10 and y = 3

(10 - 4)² - 3²

6² - 3²

36 - 9

27

500

(ab + 10) / 11 where a = 9 and b = 5

(9(5) + 10) / 11

(45 + 10) / 11

55 / 11

5

Approximating Square Roots

100

Approximate to the nearest integer.

Square Root of 14

About 4

200

Approximate to the nearest integer.

Square Root of 60

About 8

300

Approximate to the nearest integer.

NEGATIVE Square Root of 90

About -9

400

Approximate to the nearest integer.

NEGATIVE Square Root of -104

About -10

500

Approximate to the nearest integer.

NEGATIVE Square Root of 220

About -15

Translating Expressions From Words

100

A number m decreased by 10

m - 10

200

The product of 7 and a number y

7y

300

A number z squared plus 4

z² + 4

400

5 times the quantity of 18 minus a number x

5(18 - x)

500

The quotient of twice k and 3

2k / 3