Chapter 1A Test

Mathematical Expressions

100

Evaluate when a = 4 and b = 12

91 + a

95

200

Evaluate when a = 4 and b =12

27 - b - a

11

300

Evaluate when a = 4 and b =12

5b

60

400

Evaluate when a = 4 and b =12

36 / a

9

500

Find the value of a for which the expressions (2a) and (2 + a) have the same value

2

Order of Operations

100

9 x (3 + 1) - 4

32

200

Evaluate when m = 14 and n = 16

n - 4 x 3

4

300

Evaluate when m = 14 and n = 16

3 x (m/7)

6

400

Evaluate when m = 14 and n = 16

2 mn - 9

439

500

Evaluate when m = 14 and n = 16

(m+n)/3

10

Exponents and Powers of 10

100

4³

64

200

10⁸

100,000,000

300

10³

1000

400

2⁵

32

500

Write as a single power of 10

10⁴ x 10⁷

10¹¹

Decimals and Rounding

100

Round to the place specified

tenths:  7.49

7.5

200

Round to the place specified

tens:  423.6

420

300

Round to the place specified:

hundredths:  4.283

4.28

400

Estimate:

43.6 - 2.79

41

500

Estimate:

22.7 + 18.9 + 7.38

49

Basic Properties

100

Identify the property shown here:

843 + 0 = 843

Identity property of addition of zero

200

Identify the property shown here:

7r + 4r = r (7 + 4)

distributive

300

Identify the property shown here:

7.6 + 8.32 = 8.32 + 7.6

commutative

400

Use properties to find the value of the variable mentally: (answer and property used)

2.4 + (r + 9.5) = 2.4 + (9.5 + 7.8)

r = 7.8

commutative

500

Use properties to find the value of the variable mentally: (answer and property used)

62d - 19d = (62 - 19) 4

4

Distributive