Squares and Square Roots

Try these questions

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

1. 1. Without using a calculator, between which two consecutive whole numbers does \sqrt{180} lie?

   • A. 12 and 13
   • B. 13 and 14
   • C. 14 and 15
   • D. 18 and 19

2. 2. A farmer in Nakuru has a square tea plot with an area of 1225 m^2. How many metres of fencing wire are needed to go around the whole plot once?

   Type your answer (in m) in the lesson.

3. 3. On a scientific calculator, Wanjiru types -5^2 without using brackets. What answer will the calculator display?

   • A. 25
   • B. -25
   • C. 10
   • D. -10

4. 4. The area of a square plot increases from 100 m^2 to 400 m^2. What happens to the length of fencing needed around the plot?

   • A. It stays the same
   • B. It doubles
   • C. It quadruples
   • D. It increases by 4 m

5. 5. What is the word for finding a sensible approximate value close to the true answer by using known perfect squares?

   Type your answer in the lesson.

More in Squares & Square Roots

• ▸Squares of Numbers
• ▸Square Roots by the Factor Method
• ▸Square Roots by the Division Method
• ▸Square Roots of Fractions and Decimals

See every Grade 7 Mathematics lesson →