Download the Arithmetic Square Root and Cube Root MCQs with Free PDF for PPSC, FPSC, PMS, NTS, KPKPSC, and SPSC exam
The square root of a number is a number that, when multiplied by itself, equals the original number. For example, the square root of 16 is 4 because 4 × 4 = 16.
The cube root of a number is a number that, when multiplied by itself three times, equals the original number. For example, the cube root of 27 is 3 because 3 × 3 × 3 = 27.
The square root and cube root symbols are √ and ∛, respectively.
Every positive real number has two square roots, one positive and one negative. The positive square root is called the principal square root. The negative square root is called the negative square root.
For example, the square root of 4 is 2, and the negative square root of 4 is -2.
The cube root of a number is unique. For example, the cube root of 27 is 3.
There are many ways to find the square root and cube root of a number. Some common methods include:
- Long division: This is a method of dividing a number by a smaller number repeatedly until the remainder is zero.
- Estimation: This is a method of guessing the answer and then refining your guess until you are confident that you have the correct answer.
- The calculator: This is a tool that can be used to find the square root and cube root of a number quickly and easily.
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