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Quiz Chapter 3: Squares, Square Roots, Cubes and Cube Roots

10 questions · Form 1 Mathematics Bab 3: Squares, Square Roots, Cubes and Cube Roots

Question 1 of 10Score: 0

Calculate the value of ∛(-64).

Full Question List & Answer Key

Prefer reading to quizzing? All 10 questions are listed below with the answer and explanation under each one.

1. Calculate the value of ∛(-64).

  1. -4
  2. 4
  3. -8
  4. 8
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Answer: A

(-4) x (-4) x (-4) = -64, so ∛(-64) = -4.

2. Calculate: √(0.09) + ∛(0.027)

  1. 0.6
  2. 0.06
  3. 0.33
  4. 0.9
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Answer: A

√(0.09) = 0.3 and ∛(0.027) = 0.3. Thus, 0.3 + 0.3 = 0.6.

3. Estimate the value of √(30) to the nearest whole number.

  1. 5
  2. 6
  3. 4
  4. 7
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Answer: A

25 < 30 < 36, so √(25) < √(30) < √(36), which means 5 < √(30) < 6. Since 30 is closer to 25 than 36, √(30) ≈ 5.

4. Calculate the value of 0.42.

  1. 0.16
  2. 1.6
  3. 0.08
  4. 0.8
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Answer: A

0.4 x 0.4 = 0.16.

5. Find the value of (∛(125))2.

  1. 25
  2. 15
  3. 5
  4. 125
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Answer: A

∛(125) = 5. Then 52 = 25.

6. What is the value of (-3)3?

  1. -27
  2. 27
  3. -9
  4. 9
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Answer: A

(-3)3 = (-3) x (-3) x (-3) = -27. Cubing a negative number yields a negative result.

7. Calculate: (√(16) x ∛(-8))2

  1. 64
  2. -64
  3. 16
  4. -16
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Answer: A

√(16) = 4 and ∛(-8) = -2. Inside bracket: 4 x (-2) = -8. Then (-8)2 = 64.

8. Calculate the value of √(144).

  1. 12
  2. 14
  3. 72
  4. 16
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Answer: A

12 x 12 = 144, so √(144) = 12.

9. Which of the following is a perfect cube?

  1. 125
  2. 16
  3. 36
  4. 100
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Answer: A

125 = 5 x 5 x 5 = 53, making 125 a perfect cube.

10. Estimate the value of ∛(50) to the nearest whole number.

  1. 4
  2. 3
  3. 5
  4. 6
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Answer: A

27 < 50 < 64, so ∛(27) < ∛(50) < ∛(64), which means 3 < ∛(50) < 4. Since 50 is closer to 64 than 27, ∛(50) ≈ 4.

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