Variables, Expressions, and Integers (Quiz)

Expressions and Variables

100

x + 3 when x = 6

9

200

2a + b when a = 4 and b = 2

10

300

c(a²+b) when a = 4, b = 2, and c = 16

288

400

Write a variable expression: 

The product of 72 and a number x all increased by 12.

(72x) + 12

500

Write the following as a variable expression.

The sum of a number x and 9.4 all multiplied by 3.

3(x+9.4) 

Powers and Exponents

100

Write the product using an exponent:

11*11*11*11

11⁴

200

Write the power as a product:

1.5³

1.5*1.5*1.5

300

Evaluate the expression when n = 7

n³

343

400

Write the expression as an expanded product.

3²x³y

3*3*x*x*x*y

500

Evaluate the expression when x = 15

200 - x²

-25

Order of Operations

100

Evaluate the expression: 

11 * 7 - 9 * 5

32

200

(36 - 12) / (2 + 6)

3

300

Evaluate the expression when x = 4 and y = 3

5x² + 2y

86

400

Evaluate the expression when x = 4 and y = 3

7( x² - 5y)

7

500

In basketball, players score points by making free throws worth 1 point each, field goals worth 2 points each, and field goals worth 3 points each.  A player scores 4 free throws, 7 two-point field goals, and 2 three-point field goals. 

WRITE and evaluate an expression for the total number of points the player scored. 

4 * 1 + 7 * 2 + 2 * 3

24 Points 

Comparing and Ordering Integers

100

Compare the statement: 

-9 ____ -12

>

200

Graph (on a number line) the following:

-12, 4, -6, 0, -1

Teacher will provide answer.

300

What is |-42|?

42

400

Evaluate the expression when x = -8.

5 + -x + |x|

21

500

Evaluate the expression when a = -2 and b = -13.

-a + |b|

15

Integer Operations

100

-3 + -5

-8

200

-12 - (-4)

-8

300

7 - 19

-12

400

2(-3) + -12

-18

500

-3(-5 - 8)

39