lOMoARcPSD|24669649
1. Question
Given the following set of numbers:
16, −15.7, 9, −4, 3.14
Find the sum of the integers.
A. 8.44
B. 28.14
C. 25
D. 21
Answer D
Brief explanation
Integers are positive or negative but have no decimal part. The
integers are 16, 9, and –4. To find the sum, we add 16 + 9 + (–4) =
21.
Videos
Classifying Real Numbers [9:36] and Working with Real Numbers
[9:30]
Page for additional practice
Module 1: 1.02 Number Systems
2. Question
Given the list of numbers below, what are the square roots of the whole
number?
−0.64, ¼, 16, −100
A. ½ and −½
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, lOMoARcPSD|24669649
B. 10 and −10
C. 0.8 and −0.8
D. 4 and −4
Answer D
Brief explanation
The whole number is 16. The square roots of 16 are 4 and –4. Tip:
Your calculator will give you only the positive square root. When they
ask for square roots they want both positive and negative.
Videos
Classifying Real Numbers [9:36] and Working with Real Numbers
[9:30]
Pages for additional practice
Module 1: 1.02 Number Systems and 1.18 Introduction to Square
Root
3. Question
Given the following expression:
2 + 22 × (25−16)
Evaluate using the proper order of operations.
A. 38
B. 72
C. 144
D. 384
Answer A
Brief explanation
Use PEMDAS: 2 + 22 * 9 = 2 + 4 * 9 = 2 + 36 = 38.
Video
Order of Operations and Rounding
Downloaded by Daina Vulimo ()
1. Question
Given the following set of numbers:
16, −15.7, 9, −4, 3.14
Find the sum of the integers.
A. 8.44
B. 28.14
C. 25
D. 21
Answer D
Brief explanation
Integers are positive or negative but have no decimal part. The
integers are 16, 9, and –4. To find the sum, we add 16 + 9 + (–4) =
21.
Videos
Classifying Real Numbers [9:36] and Working with Real Numbers
[9:30]
Page for additional practice
Module 1: 1.02 Number Systems
2. Question
Given the list of numbers below, what are the square roots of the whole
number?
−0.64, ¼, 16, −100
A. ½ and −½
Downloaded by Daina Vulimo ()
, lOMoARcPSD|24669649
B. 10 and −10
C. 0.8 and −0.8
D. 4 and −4
Answer D
Brief explanation
The whole number is 16. The square roots of 16 are 4 and –4. Tip:
Your calculator will give you only the positive square root. When they
ask for square roots they want both positive and negative.
Videos
Classifying Real Numbers [9:36] and Working with Real Numbers
[9:30]
Pages for additional practice
Module 1: 1.02 Number Systems and 1.18 Introduction to Square
Root
3. Question
Given the following expression:
2 + 22 × (25−16)
Evaluate using the proper order of operations.
A. 38
B. 72
C. 144
D. 384
Answer A
Brief explanation
Use PEMDAS: 2 + 22 * 9 = 2 + 4 * 9 = 2 + 36 = 38.
Video
Order of Operations and Rounding
Downloaded by Daina Vulimo ()
