# Elementary Technical Mathematics 12th edition

Dale Ewen
Publisher: Cengage Learning

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• Ewen Elementary Technical Mathematics 12e

Access is contingent on use of this textbook in the instructor's classroom.

• Chapter 1: Basic Concepts
• 1.1: Review of Basic Operations (40)
• 1.2: Order of Operations (13)
• 1.3: Area and Volume (29)
• 1.4: Formulas (13)
• 1.5: Prime Factorization (18)
• 1.6: Introduction to Fractions (11)
• 1.7: Addition and Subtraction of Fractions (34)
• 1.8: Multiplication and Division of Fractions (30)
• 1.9: The U.S. System of Weights and Measures (37)
• 1.10: Addition and Subtraction of Decimal Fractions (31)
• 1.11: Rounding Numbers (9)
• 1.12: Multiplication and Division of Decimal Fractions (22)
• 1.13: Percent (9)
• 1.14: Rate, Base, and Part (17)
• 1.15: Powers and Roots (6)
• 1.16: Applications Involving Percent: Business and Personal Finance (8)
• 1: Review
• 1: Test

• Chapter 2: Signed Numbers and Powers of 10
• 2.1: Addition of Signed Numbers (13)
• 2.2: Subtraction of Signed Numbers (14)
• 2.3: Multiplication and Division of Signed Numbers (19)
• 2.4: Signed Fractions (18)
• 2.5: Powers of 10 (15)
• 2.6: Scientific Notation (24)
• 2.7: Engineering Notation (12)
• 2: Review
• 2: Test
• 2: Cumulative Review

• Chapter 3: The Metric System
• 3.1: Introduction to the Metric System (29)
• 3.2: Length (30)
• 3.3: Mass and Weight (30)
• 3.4: Volume and Area (20)
• 3.5: Time, Current, and Other Units (20)
• 3.6: Temperature (15)
• 3.7: Metric and U.S. Conversion (38)
• 3: Review
• 3: Test

• Chapter 4: Measurement
• 4.1: Approximate Numbers and Accuracy (22)
• 4.2: Precision and Greatest Possible Error (22)
• 4.3A: The Vernier Caliper (2)
• 4.3B: The Vernier Caliper (1)
• 4.4A: The Micrometer Caliper (9)
• 4.4B: The Micrometer Caliper (8)
• 4.5: Addition and Subtraction of Measurements (38)
• 4.6: Multiplication and Division of Measurements (34)
• 4.7: Relative Error and Percent of Error (23)
• 4.8: Color Code of Electrical Resistors (14)
• 4.9: Reading Scales (12)
• 4: Review
• 4: Test
• 4: Cumulative Review

• Chapter 5: Polynomials: An Introduction to Algebra
• 5.1: Fundamental Operations (11)
• 5.2: Simplifying Algebraic Expressions (29)
• 5.3: Addition and Subtraction of Polynomials (19)
• 5.4: Multiplication of Monomials (14)
• 5.5: Multiplication of Polynomials (20)
• 5.6: Division by a Monomial (15)
• 5.7: Division by a Polynomial (12)
• 5: Review
• 5: Test

• Chapter 6: Equations and Formulas
• 6.1: Equations (24)
• 6.2: Equations with Variables in Both Members (10)
• 6.3: Equations with Parentheses (16)
• 6.4: Equations with Fractions (19)
• 6.5: Translating Words into Algebraic Symbols (12)
• 6.6: Applications Involving Equations (14)
• 6.7: Formulas (21)
• 6.8: Substituting Data into Formulas (20)
• 6.9: Reciprocal Formulas Using a Calculator (10)
• 6: Review
• 6: Test
• 6: Cumulative Review

• Chapter 7: Ratio and Proportion
• 7.1: Ratio (35)
• 7.2: Proportion (41)
• 7.3: Direct Variation (14)
• 7.4: Inverse Variation (15)
• 7: Review
• 7: Test

• Chapter 8: Graphing Linear Equations
• 8.1: Linear Equations with Two Variables (19)
• 8.2: Graphing Linear Equations (16)
• 8.3: The Slope of a Line (20)
• 8.4: The Equation of a Line (20)
• 8: Review
• 8: Test
• 8: Cumulative Review

• Chapter 9: Systems of Linear Equations
• 9.1: Solving Pairs of Linear Equations by Graphing (7)
• 9.2: Solving Pairs of Linear Equations by Addition (8)
• 9.3: Solving Pairs of Linear Equations by Substitution (6)
• 9.4: Applications Involving Pairs of Linear Equations (15)
• 9: Review
• 9: Test

• Chapter 10: Factoring Algebraic Expressions
• 10.1: Finding Monomial Factors (10)
• 10.2: Finding the Product of Two Binomials Mentally (13)
• 10.3: Finding Binomial Factors (15)
• 10.4: Special Products (11)
• 10.5: Finding Factors of Special Products (11)
• 10.6: Factoring General Trinomials (9)
• 10: Review
• 10: Test
• 10: Cumulative Review

• Chapter 11: Quadratic Equations
• 11.1: Solving Quadratic Equations by Factoring (17)
• 11.2: The Quadratic Formula (10)
• 11.3: Applications Involving Quadratic Equations (15)
• 11.4: Graphs of Quadratic Equations (10)
• 11.5: Imaginary Numbers (16)
• 11: Review
• 11: Test

• Chapter 12: Geometry
• 12.1: Angles and Polygons (21)
• 12.2: Quadrilaterals (21)
• 12.3: Triangles (28)
• 12.4: Similar Polygons (15)
• 12.5: Circles (25)
• 12.6: Radian Measure (16)
• 12.7: Prisms (14)
• 12.8: Cylinders (19)
• 12.9: Pyramids and Cones (18)
• 12.10: Spheres (11)
• 12: Review
• 12: Test
• 12: Cumulative Review

• Chapter 13: Right Triangle Trigonometry
• 13.1: Trigonometric Ratios (22)
• 13.2: Using Trigonometric Ratios to Find Angles (8)
• 13.3: Using Trigonometric Ratios to Find Sides (8)
• 13.4: Solving Right Triangles (8)
• 13.5: Applications Involving Trigonometric Ratios (23)
• 13: Review
• 13: Test

• Chapter 14: Trigonometry with Any Angle
• 14.1: Sine and Cosine Graphs (15)
• 14.2: Period and Phase Shift (10)
• 14.3: Solving Oblique Triangles: Law of Sines (13)
• 14.4: Law of Sines: The Ambiguous Case (9)
• 14.5: Solving Oblique Triangles: Law of Cosines (19)
• 14: Review
• 14: Test
• 14: Cumulative Review

• Chapter 15: Basic Statistics
• 15.1: Bar Graphs (7)
• 15.2: Circle Graphs (10)
• 15.3: Line Graphs (10)
• 15.4: Other Graphs (10)
• 15.5: Mean Measurement (9)
• 15.6: Other Average Measurements and Percentiles (9)
• 15.7: Range and Standard Deviation (6)
• 15.8: Grouped Data (7)
• 15.9: Standard Deviation for Grouped Data (6)
• 15.10: Statistical Process Control (6)
• 15.11: Other Graphs for Statistical Data (7)
• 15.12: Normal Distribution (8)
• 15.13: Probability (11)
• 15.14: Independent Events (11)
• 15: Review
• 15: Test

• Chapter 16: Binary and Hexadecimal Numbers
• 16.1: Introduction to Binary Numbers (7)
• 16.2: Addition of Binary Numbers (4)
• 16.3: Subtraction of Binary Numbers (5)
• 16.4: Multiplication of Binary Numbers (5)
• 16.5: Conversion from Decimal to Binary System (7)
• 16.6: Conversion from Binary to Decimal System (7)
• 16.7: Hexadecimal System (9)
• 16.8: Addition and Subtraction of Hexadecimal Numbers (9)
• 16.9: Binary to Hexadecimal Conversion (6)
• 16.10: Hexadecimal Code for Colors
• 16: Review
• 16: Test
• 16: Cumulative Review

Elementary Technical Mathematics, 12th Edition, helps students with minimal math backgrounds successfully prepare for technical, trade, allied health, or tech prep programs. Author Dale Ewen focuses on fundamental concepts in basic arithmetic: the metric system and measurement, algebra, geometry, trigonometry, and statistics. Thousands of examples, exercises, and applications cover such fields as industrial and construction trades, electronics, agriculture/horticulture, allied health, CAD/drafting, HVAC, welding, auto/diesel service, aviation, natural resources, culinary arts, and business/personal finance—to engage students and provide them with the math background they need to succeed in future courses and careers.

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## Questions Available within WebAssign

Most questions from this textbook are available in WebAssign. The online questions are identical to the textbook questions except for minor wording changes necessary for Web use. Whenever possible, variables, numbers, or words have been randomized so that each student receives a unique version of the question. This list is updated nightly.

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Group Quantity Questions
Chapter 1: Basic Concepts
1.1 40 001 002 003 004 005 006 007 008 009 010 011 012 013 015 018 019 020 021 022 023 027 028 029 030 032 033 036 038 039 042 043 045 047 048 052 059 065 071 075 077
1.2 13 002 004 005 010 014 018 020 025 033 036 040 042 044
1.3 29 001 002 003 006 007 008 009 010 011 012 013 014 018 019 021 022 023 025 026 027 029 030 031 032 034 036 038 040 501.XP
1.4 13 002 007 008 010 012 013 017 024 025 027 028 029 030
1.5 18 001 002 003 008 010 015 022 023 027 028 029 033 034 036 046 052 059 064
1.6 11 002 013 014 015 027 032 036 039 046 051 052
1.7 34 002 006 007 019 023 025 031 033 036 040 043 045 047 048 049 052 054 056 057 058 060 061 062 063 064 065 066 069 071 075 079 088 092 093
1.8 30 001 004 006 007 014 018 019 024 025 034 036 038 040 041 043 049 051 052 053 057 064 071 073 076 077 079 083 087 091 093
1.9 37 001 002 003 004 005 006 007 009 011 013 015 017 019 021 022 023 025 029 030 031 032 033 035 036 037 038 040 041 045 046 049 053 055 058 059 063 065
1.10 31 002 006 007 010 013 014 015 017 030 032 035 036 037 038 040 043 047 049 050 051 053 055 056 057 063 065 066 070 074 075 077
1.11 9 003 006 008 012 013 024 025 030 031
1.12 22 003 008 014 015 023 025 026 027 030 031 034 035 039 040 044 048 049 061 062 063 068 073
1.13 9 002 010 014 017 036 038 054 059 068
1.14 17 001 006 007 009 012 014 015 024 029 032 035 039 041 045 047 055 056
1.15 6 003 004 009 016 018 019
1.16 8 002 003 005 008 009 013 018 025
Chapter 2: Signed Numbers and Powers of 10
2.1 13 001 002 009 017 021 023 024 033 035 041 047 055 063
2.2 14 001 006 008 010 011 013 022 024 037 045 049 052 057 059
2.3 19 001 002 004 010 014 021 038 042 046 047 049 050 051 052 053 054 070 072 080
2.4 18 001 002 005 007 010 011 013 014 016 017 019 021 027 029 035 037 041 042
2.5 15 001 002 003 004 005 008 012 014 017 021 022 023 025 028 030
2.6 24 006 011 016 017 019 029 030 031 033 042 043 046 053 056 059 062 063 064 069 072 073 077 079 082
2.7 12 001 007 013 019 025 026 027 029 031 037 039 040
Chapter 3: The Metric System
3.1 29 001 003 005 007 009 011 013 015 017 018 019 020 021 022 023 024 025 026 027 028 029 030 031 032 033 034 035 037 039
3.2 30 001 003 005 007 009 011 013 015 017 019 025 029 034 036 039 040 049 050 051 052 053 054 055 056 057 058 059 060 061 062
3.3 30 001 003 005 007 009 011 013 015 024 025 027 029 031 033 035 036 037 038 039 040 041 042 043 044 045 046 047 048 049 050
3.4 20 001 003 005 006 007 009 011 013 015 027 028 031 039 041 043 045 047 049 051 052
3.5 20 001 003 005 007 009 011 013 015 017 018 019 021 023 025 026 027 029 030 031 032
3.6 15 001 002 003 004 005 007 008 009 010 011 013 014 015 017 019
3.7 38 001 002 003 004 005 006 007 008 009 010 011 012 013 014 015 017 019 021 023 025 027 028 029 030 031 032 034 037 039 041 043 044 046 048 050 051 053 056
Chapter 4: Measurement
4.1 22 001 003 005 007 008 009 010 011 013 015 017 019 020 021 023 025 027 029 031 033 035 036
4.2 22 001 002 003 004 005 007 008 009 011 012 013 014 015 016 017 019 021 022 023 025 027 029
4.3A 2 001 012
4.3B 1 001
4.4A 9 001 002 006 007 009 011 012 013 018
4.4B 8 001 002 003 004 007 009 011 013
4.5 38 001 003 005 007 009 010 011 012 013 015 017 019 021 023 025 026 027 028 029 031 032 033 034 035 037 038 039 041 042 043 044 045 047 049 051 053 054 055
4.6 34 001 003 004 005 006 007 009 011 012 013 015 017 018 019 021 022 023 025 026 027 028 029 031 032 033 034 035 037 039 041 043 044 046 047
4.7 23 001 003 005 007 009 010 011 013 015 017 018 019 020 021 022 024 027 031 033 035 037 039 041
4.8 14 001 003 005 007 009 011 013 014 015 017 023 024 025 027
4.9 12 001 003 005 007 009 011 013 015 017 019 021 501.XP
Chapter 5: Polynomials: An Introduction to Algebra
5.1 11 001 009 011 015 017 019 022 027 030 039 041
5.2 29 001 002 003 004 005 011 012 013 017 020 021 023 025 027 032 034 035 038 039 041 042 044 050 053 054 057 066 076 077
5.3 19 001 005 010 011 012 020 023 024 031 033 035 036 037 041 042 051 053 055 056
5.4 14 006 007 012 014 016 021 025 029 031 045 049 053 059 066
5.5 20 001 007 012 015 016 021 023 026 031 034 037 038 044 048 050 054 059 064 065 066
5.6 15 001 007 008 016 017 021 022 027 028 029 038 039 044 049 050
5.7 12 002 005 006 007 013 015 019 021 023 025 027 029
Chapter 6: Equations and Formulas
6.1 24 001 003 004 005 006 007 008 012 015 017 019 020 023 027 031 036 037 040 041 045 051 056 059 060
6.2 10 001 004 006 013 019 022 024 025 026 029
6.3 16 003 005 008 009 011 013 017 019 025 031 036 039 043 047 053 058
6.4 19 001 003 004 006 008 011 015 016 019 021 022 026 027 028 036 039 040 041 042
6.5 12 001 002 003 005 009 011 013 015 019 020 023 025
6.6 14 001 003 005 007 009 011 013 016 019 021 023 025 027 030
6.7 21 001 002 003 007 009 010 012 013 015 019 020 023 024 027 028 029 032 035 036 040 042
6.8 20 001 003 005 009 011 012 013 014 016 017 019 022 024 026 027 028 029 030 031 032
6.9 10 001 005 007 009 011 014 017 019 021 023
Chapter 7: Ratio and Proportion
7.1 35 003 005 006 007 011 013 014 017 021 022 025 029 032 033 034 035 036 039 041 044 049 051 053 054 055 056 060 061 065 067 069 073 074 076 501.XP
7.2 41 003 004 005 006 007 008 013 017 018 021 023 033 035 036 043 045 047 049 050 054 057 060 061 063 064 065 067 069 070 071 072 073 075 077 079 083 086 089 091 092 093
7.3 14 011 013 017 019 021 023 027 035 037 039 049 051 053 054
7.4 15 001 009 011 013 018 021 027 029 031 033 037 039 041 045 047
Chapter 8: Graphing Linear Equations
8.1 19 002 007 011 015 022 024 025 029 031 035 039 041 045 047 049 051 059 064 065
8.2 16 001 003 005 006 009 011 015 019 022 023 025 027 031 040 042 043
8.3 20 001 005 007 009 011 013 015 017 018 019 021 023 025 027 031 033 034 037 038 040
8.4 20 003 005 008 011 013 015 019 023 026 027 031 032 038 040 041 045 049 053 055 057
Chapter 9: Systems of Linear Equations
9.1 7 004 007 010 015 019 027 029
9.2 8 007 008 013 019 031 033 035 042
9.3 6 011 017 019 021 022 024
9.4 15 001 003 005 008 013 015 017 021 025 027 029 031 037 043 045
Chapter 10: Factoring Algebraic Expressions
10.1 10 002 005 011 016 017 021 024 027 039 041
10.2 13 001 005 009 013 020 022 024 025 033 034 042 045 049
10.3 15 001 004 010 013 018 026 029 035 036 040 042 058 065 067 079
10.4 11 001 002 005 013 015 031 035 036 037 038 039
10.5 11 001 002 004 008 012 013 020 023 024 029 038
10.6 9 003 005 012 016 023 033 035 037 039
Chapter 11: Quadratic Equations
11.1 17 003 004 006 008 009 011 012 013 015 017 023 025 027 030 031 032 033
11.2 10 001 005 007 008 009 011 012 013 015 017
11.3 15 001 003 004 005 006 007 008 009 011 012 013 014 015 017 018
11.4 10 001 002 003 006 007 009 011 017 019 020
11.5 16 001 003 013 014 015 019 022 025 027 028 029 035 036 039 042 050
Chapter 12: Geometry
12.1 21 001 003 007 011 012 013 014 015 016 017 018 019 021 022 023 024 025 026 027 028 029
12.2 21 001 002 003 005 007 009 010 011 015 017 019 021 023 025 026 029 032 037 038 042 043
12.3 28 001 003 006 007 008 009 010 013 014 017 018 021 025 027 029 030 031 033 035 037 038 039 041 045 046 047 048 049
12.4 15 001 002 004 005 007 008 009 011 013 015 016 017 019 020 023
12.5 25 001 003 007 008 011 013 015 016 017 019 020 021 023 025 031 033 034 035 037 038 039 042 050 052 055
12.6 16 005 007 011 012 013 015 019 021 023 024 025 027 028 030 031 033
12.7 14 001 003 005 006 007 008 009 011 012 016 017 019 020 021
12.8 19 001 003 004 005 007 011 013 014 015 017 020 022 023 024 029 030 031 033 034
12.9 18 001 002 003 005 007 009 010 011 013 014 015 017 019 020 021 025 027 028
12.10 11 001 003 005 007 009 010 013 014 015 017 018
Chapter 13: Right Triangle Trigonometry
13.1 22 001 003 005 006 008 010 011 012 015 018 025 027 029 033 037 040 049 050 051 061 063 065
13.2 8 001 003 005 007 009 011 013 015
13.3 8 001 003 005 007 009 011 013 015
13.4 8 001 003 005 007 009 011 013 015
13.5 23 001 002 003 004 006 007 008 009 011 012 013 015 016 017 018 019 021 024 025 029 030 033 034
Chapter 14: Trigonometry with Any Angle
14.1 15 001 007 011 013 015 017 018 019 020 025 029 031 033 034 035
14.2 10 001 003 005 011 013 014 017 018 021 022
14.3 13 001 002 003 004 005 009 013 015 017 018 019 021 022
14.4 9 001 003 005 007 013 015 017 018 019
14.5 19 001 003 005 007 009 011 012 013 016 017 018 019 021 025 026 027 028 029 031
Chapter 15: Basic Statistics
15.1 7 001 005 011 015 017 019 021
15.2 10 001 003 005 007 009 010 011 012 013 016
15.3 10 001 004 005 007 009 010 011 012 014 015
15.4 10 001 002 003 004 005 006 007 008 009 010
15.5 9 001 003 007 011 015 017 019 020 021
15.6 9 001 003 007 027 029 035 036 037 038
15.7 6 001 003 011 021 023 031
15.8 7 001 002 003 004 005 012 013
15.9 6 001 003 004 005 012 013
15.10 6 001 002 003 004 005 006
15.11 7 001 002 003 007 009 010 011
15.12 8 001 002 003 004 005 006 007 008
15.13 11 001 002 003 005 006 008 009 010 014 015 017
15.14 11 001 002 003 004 005 007 008 011 013 014 015
Chapter 16: Binary and Hexadecimal Numbers
16.1 7 001 003 005 007 011 017 019
16.2 4 001 003 015 026
16.3 5 001 005 017 021 025
16.4 5 003 004 007 013 019
16.5 7 002 011 012 017 018 019 020
16.6 7 003 005 008 010 012 013 020
16.7 9 001 004 005 017 020 021 025 028 029
16.8 9 001 005 021 029 031 043 045 056 059
16.9 6 001 005 017 025 041 043
Total 1927