1.1-1.4: Variables,Expressions & Integers

Expressions & Variables

100

Evaluate the expression 

when x = 6

24/x

4

200

Evaluate the expression 

5x

when x = 7

35

300

Write a variable expression to represent the word phrase.

The quotient of a number x and 6.

x/6

400

Write a variable expression to represent the word phrase.

7 less than the product of 2 and a number x

2x - 7

500

Evaluate the expression when 

a = 2.5 and b = 15

b/a

6

Powers and Exponents

100

Write the product using exponents.

41 * 41 * 41

41³

200

Write the product using exponents.

k * k * k * k * k

k⁵

300

Write the power in words and as a repeated multiplication problem.

8³

8 to the 3rd power or 8 cubed

512

400

Evaluate the expression when 

m = 3 and m = 0.8

m³

27 ; 0.512

500

Evaluate the expression when 

m = 3 and when m = 0.8

m⁴

81; 0.4096

EvaluatingExpressions

100

Evaluate the expression.

3(7.4 + 2.2)

28.8

200

Evaluate the expression.

(23-5)/(4.2 + 4.8)

2

300

Evaluate the expression.

10 * [6+(8 * 2)]

220

400

Evaluate the expression when 

x = 4 and y = 9

10(y - x)

50

500

Evaluate the expression when 

x = 4 and y = 9

3[(x² - y) + 6]

39

Comparing and Ordering Integers

100

Compare using >,< or =.

- 9  __   4

<

200

State the absolute value of the number.

18

18

300

State the opposite of the number.

-100

100

400

Evaluate the expression when 

a = -8

-|a|

-8

500

Evaluate the expression when 

y= -5

|y| -2

3