Concept of Square Roots of Numbers

Try these questions

5 questions from this lesson’s quiz. Start the lesson to answer them and see the right answers.

1. 1. Which of these numbers is a perfect square?

   • A. 54
   • B. 74
   • C. 64
   • D. 24

2. 2. A square classroom mat has an area of 64 m^2. What is the length of one side of the mat?

   Type your answer (in m) in the lesson.

3. 3. In the expression √49 = 7, what is the number 49 under the radical symbol called?

   Type your answer in the lesson.

4. 4. A pupil says that √16 = 8 because 16 ÷ 2 = 8. What is the mistake, and what is the correct answer?

   • A. There is no mistake, because √16 = 8
   • B. The pupil halved 16; the correct answer is 4 because 4 × 4 = 16
   • C. The pupil should have doubled 16; the correct answer is 32
   • D. The pupil should have squared 16; the correct answer is 256

5. 5. Kamau's square pen has an area of 36 m^2. He wants to fence all round it. What is the perimeter of the pen?

   Type your answer (in m) in the lesson.

More in Whole Numbers

• ▸Real Life Applications of Rounding Off up to 100,000
• ▸Concept of Squares of Whole Numbers
• ▸Calculating Squares of Numbers up to 50
• ▸Calculating Squares of Whole Numbers up to 100
• ▸Determining Square Roots Using Factor Trees
• ▸Square Roots of Perfect Squares up to 1,000
• ▸Square Roots of Perfect Squares up to 10,000
• ▸Combined Operations with Powers

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