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Answer Key Middle School Math Concepts - Grade 7
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Answer Key Middle School Math Concepts - Grade 7
Answer Key. Middle School Math Concepts - Grade 7. 1. 9.1. Evaluation of Square Roots. Answers. 1. 4. 2. 5. 3. 1. 4. 7. 5. 12. 6. 9. 7. 13. 8. 11. 9. ...
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Answer Key
Chapter 9 – Distance and Area 9.1
Evaluation of Square Roots
Answers 1. 4
2. 5
3. 1
4. 7
5. 12
6. 9
7. 13
8. 11
9. 10
10. 16
11. 3 and 4
12. 3 and 4
13. 5 and 6
14. 6 and 7
15. 7 and 8
16. 8 and 9
17. 8 and 9
18. 10 and 11
19. 2 and 3
20. 3 and 4
9.2
Evaluation of Perfect Square Roots
Answers 1. 6
2. 7
3. 8
4. 9
5. 10
6. 11
7. 12
8. 14
9. 20
10. 30
11. 100 number
12. 15
13. 16
14. 18
15. square roots are each a whole
9.3
Simplification of Radical Expressions
Answers 1. 18
2. 25
3. 26
4. 120
5. 9
6. 35
7. 21
8. 24
9. 21
10. 23
11. 3
12. 47
13. 31
14. 9
15. 25
9.4
Equations with Square Roots
Answers 1. 3
2. 7
3. 10
4. 8
5. 15
6. 16
7. 3
8. 5
9. 6
10. 8
11. 9
12. 99
13. 6
14. 2
15. 3
Middle School Math Concepts - Grade 7
1
Answer Key
Chapter 9 – Distance and Area 9.5
Estimation of Square Roots
Answer 1. 2.8
2. 3.3
3. 4.9
4. 5.6
5. 6.1
6. 6.6
7. 7.7
8. 8.2
9. 8.5
10. 8.9
11. 9.7
12. 9.9
13. 10
14. 12.2
15. 11.7
9.6
Properties of Rational versus Irrational Numbers
Answers 1. Irrational
2. Rational
3. Rational
4. Rational
5. Irrational
6. Rational
7. Rational
8. Irrational
9. Irrational
10. Rational
11. Irrational
12. Rational
13. Irrational
14. Rational
15. Irrational
9.7
Pythagorean Theorem and Its Converse
Answers 1. 10
2. 15
3. 20
4. 25
5. 30
6. 40
7. 8.6
8. 14.2
9. 15.6
10. 14. 4
11. 13.6
12. 12.04
13. 16.55
14. 14.31
15. 14.42
9.8
Solving Equations Using the Pythagorean Theorem
Answers 1. 10.4
2. 12
3. 3
4. 15.6
5. 20
6. 6.6
7. 8.7
8. 7.5
9. 1.52 + 22 = c2
10. 2.5 m tall
11. 32 + 42 = c2
12. 5 miles
13. 5.52 + b2 = 14.52
14. 13.4 inches
Middle School Math Concepts - Grade 7
2
Answer Key
Chapter 9 – Distance and Area 9.9
Area of a Parallelogram
Answers 1. 45 sq. in.
2. 12 sq. in.
3. 72 sq. ft.
4. 88 sq. meters
5. 130 sq. yds.
6. 10 sq. ft.
7. 19.25 sq. in
8. 58.5 sq. ft.
9. 396 sq. miles
10. 348 sq. meters
11. 242 square meters
12. 585 sq. meters
13. 1000 sq. meters
14. 4,400 sq. meters
15. 1106 sq. meters
9.10
Unknown Dimensions of Parallelograms
Answers 1. 5 ft
2. 2.5 in.
3. 9 ft
4. 10 in.
5. 2.5 ft.
6. 12 in.
7. 18 ft.
8. 16 m
9. 2 in.
10. 5 miles
11. 6 in.
12. 2 meters
13. 15 ft.
14. 11 ft.
15. 11 ft.
16. 8 miles
17. 3 meters
18. 4 feet
9.11
Estimation of Parallelogram Area in Scale Drawings
Answers 1. 96 sq. ft.
2. 192 sq. ft.
3. 64 sq. ft.
4. 80 sq. ft.
5. 144 sq. ft.
6. 320 sq. ft.
7. 528 sq. ft.
8. 540 sq. ft.
9. 720 sq. ft.
10. 26 cm
11. 42 in.
12. 398.94 sq. cm
13. 2210 sq. ft.
14. Kara’s, 3.3 inches
15. 223 cm
9.12
Triangle Area
Answers 1. 18 in2
2. 9 in2
3. 14 in2
4. 31.5 m2
5. 60 ft2
6. 35 ft2
7. 91 ft2
8. 44 m2
9. 55.25 ft2
10. 51.75 m2
11. 135 m2
12. 162.75 ft2
13. 99 ft2
14. 158.88 m2
15. 440 ft2
Middle School Math Concepts - Grade 7
3
Answer Key
Chapter 9 – Distance and Area 9.13
Unknown Dimensions of Triangles
Answers 1. 3 m
2. 6 m
3. 3 m
4. 6 ft
5. 5 ft
6. 12 ft
7. 9 in
8. 18 in
9. 9 ft.
10. 6 in.
11. 10 in
12. 14 ft.
13. 18 in
14. 17 ft.
15. 13 in.
9.14
Area of Composite Shapes Involving Triangles
Answers 1. 66.5 sq. in.
2. 99 sq. in.
3. 126 sq. in.
4. 45 sq. ft.
5. 45 sq. ft
6. 120 sq. ft.
7. 102 sq. ft.
8. 150 sq. in.
9. 132.5 sq. in
10. 220.25 sq. in.
11. 82.5 sq. in
12. 24 cm
13. 13 in.
14. 432 sq. ft.
15. 16.5 sq. in.
9.15
Circle Circumference
Answers 1. 12.56 in.
2. 12.56 in.
3. 28.26 in.
4. 25.12 m
5. 75.36 in.
6. 37.68 mm
7. 87.92 mm
8. 40.82 ft.
9. 62.8 in
10. 23.55 ft.
11. 15.7 in
12. 35.17 ft.
13. 11.78 ft.
14. 14.13 ft.
15. 33.76 m
9.16
Diameter or Radius of a Circle Given Circumference
Answers 1. 5 ft
2. 6.5 in.
3. 7 m
4. 1.5 cm
5. 15 ft.
6. 7 in.
7. 2.5 m
8. 2.25 in.
9. 3.25 cm
10. 2 ft.
11. 102.05 m
12. 420.76 cm
13. 45.40 ft.
14. 55 inches 15. 100 cm
16. 6.5 ft.
17. 3548.2 m
18. 138.16 in.
Middle School Math Concepts - Grade 7
4
Answer Key
Chapter 9 – Distance and Area 9.17
Area of a Circle
Answers 1. 28.26 sq. in
2. 78.5 sq. in
3. 50.24 sq. ft.
4. 153.86 sq. m
5. 113.04 sq. cm
6. 38.47 sq. in
7. 200.96 sq. in
8. 153.86 sq. cm
9. 314 sq. in
10. 176.63 sq. m
11. 379.94 sq. cm
12. 452.16 sq. mm
13. 1808.64 sq. in.
14. 854.87 sq. in
15. 2082.02 sq. in
9.18
Radius or Diameter of a Circle Given Area
Answers 1. 2 in
2. 5 m
3. 8 cm
4. 9 in
5. 1.5 ft.
6. 3 m
7. 4 in
8. 10 m
9. 16 cm
10. 18 in
11. 3 ft
12. 6 m
13. 28 ft.
14. 15 m
15. 12 ft
9.19
Areas of Combined Figures Involving Circles
Answers 1. 168.49 sq. mm
2. 100.61 sq. in.
3. 73.19 sq. in.
4. 235.33 sq. ft.
5. 334.55 sq. ft.
6. 49.81 sq. ft.
7. 65.13 sq. ft.
8. 72.29 sq. in.
9. 47.23 sq. ft.
10. 24.06 sq. ft.
11. 19.81 sq. in
12. 40.23 sq. in.
13. 22.87 sq. in
14. 452.16 sq. ft.
15. 138,474 sq. ft.
Middle School Math Concepts - Grade 7
5
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