High School Placement Test (HSPT) Practice Test

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Study for the High School Placement Test with our HSPT quiz. Revise with flashcards and multiple choice questions, each offering hints and explanations. Prepare confidently for your exam!

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What is the cube root of -0.027?

-0.3
0.3
0.027
-1

The correct answer is: -0.3

To find the cube root of -0.027, we need to determine which number, when cubed, gives us -0.027. To approach this, we know that the cube root function can handle negative numbers. Specifically, if a number is negative, its cube root will also be negative. By calculating, we see that -0.3 multiplied by itself three times is indeed: \[ (-0.3) \times (-0.3) \times (-0.3) = -0.027 \] This confirms that the cube root of -0.027 is -0.3. Thus, the correct answer reflects the principle that the cube root function maintains the sign of the original number, resulting in a negative result when the input is negative. Hence, the cube root of -0.027 is -0.3.