CBSE Questions for Class 8 Maths Squares And Square Roots Quiz 8 - MCQExams.com

The square root of $$\displaystyle\frac{36}{5}$$ correct to two decimal places is _____________.
  • $$2.68$$
  • $$2.69$$
  • $$2.67$$
  • $$2.66$$
The number that must be subtracted from $$16161$$ to get a perfect square is ________.
  • $$31$$
  • $$32$$
  • $$33$$
  • $$34$$
Estiamate the square root of $$850$$ 
  • $$29.15$$
  • $$30.21$$
  • $$98.23$$
  • $$23.11$$
What approximate value will come in place of the question mark $$(?)$$ in the following question? (you are not expected to calculate the exact value)
$$\sqrt{8000}=?$$
  • $$76$$
  • $$89$$
  • $$65$$
  • $$97$$
  • $$58$$
Find the square root of $$225$$ by division method.
  • $$5$$
  • $$15$$
  • $$25$$
  • $$35$$
State true (T) or false (F):
The square of 86 will have 6 at the units place.
  • True
  • False
Write a Pythagorean triplet whose one number is 8
  • $$8,10,6$$
  • $$15,10,5$$
  • $$63,27,3$$
  • $$80,40,20$$
What will be the unit digits of the square of the following numbers?
$$39$$, $$297$$, $$5125$$, $$7286$$
  • $$9,9,1,6$$
  • $$1,9,5,6$$
  • $$9,2,5,2$$
  • $$3,2,5,7$$
Use Pythagoras theorem to check which of following triplets would make a right triangle.
  • $$5, 20, 25$$
  • $$7, 24, 25$$
  • $$7, 23, 25$$
  • $$15, 20, 25$$
Find the square root of $$126736$$ by long division method.
  • $$355$$
  • $$356$$
  • $$366$$
  • $$365$$
Find the square root of which of the following numbers will be the least :
  • $$7\dfrac{58}{81}$$
  • $$11\dfrac{14}{25}$$
  • $$10\dfrac{1}{36}$$
  • $$0.3481$$
Find value of $$\sqrt{5184}$$.
  • $$72$$
  • $$52$$
  • $$82$$
  • $$62$$
Find the square root by prime factorisation: 
i) $$196$$
ii) $$225$$
  • $$14, 25$$
  • $$14, 15$$
  • $$24, 15$$
  • $$24, 25$$
Find the value of $$\sqrt{66049}$$.
  • $$253$$
  • $$257$$
  • $$347$$
  • $$343$$
What are the number which cannot come to the unit place of perfect square?
  • $$2$$
  • $$3$$
  • $$7$$
  • $$8$$
A pythagorean triplet whose two numbers are 8 and 10, then third number is
  • $$6$$
  • $$14$$
  • $$16$$
  • $$18$$
Which of the following is a perfect square number?
  • 257
  • 256
  • 300
  • None of these
Which of the following is pythagorean triplet?
  • 3 ,4 ,5
  • 5 ,12 ,13
  • 7 ,24 ,25
  • All of these
Find the atleast number which must  be added to each of the following numbers to get a perfect square. Also find the square root of the perfect square numbers.

$$a)525$$
  • 4
  • 3
  • 1
  • 6
  • 12
State whether the statements are true (T) or false (F).
For every natural number $$m, (2m - 1, 2m^2 - 2m, 2m^2 - 2m^2 + 1)$$ is a Pythagorean triplet.
  • True
  • False
Which of the following is a Pythagorean triplet?
  • $$8, 6, 10$$
  • $$8, 9, 10$$
  • $$10, 12, 13$$
  • None of these
Find $$\sqrt {125}$$ given $$\sqrt {5}=2.23607$$
  • $$11.21$$
  • $$11.38$$
  • $$11.18$$
  • $$11.24$$
Which of the following numbers are not perfect square?
  • 2397
  • 121000
  • 25008
  • 19640
  • All of above
Simplify : $$(64)^{1/2}$$
  • $$12$$
  • $$2$$
  • $$8$$
  • $$14$$
If $$\sqrt{2}=1.414$$ then the value of $$\sqrt{8}$$ is
  • $$2.828$$
  • $$1.828$$
  • $$2.282$$
  • $$2.288$$
Square root of 169 is
  • 13
  • 14
  • 15
  • None of these
Find which of the square of the following numbers are even ?
  • $$431$$
  • $$2826$$
  • $$7779$$
  • $$82004$$
Mark the correct alternative of the following.
Which of the following is/are not Pythagorean triplet(s)?
  • $$3, 4, 5$$
  • $$8, 15, 17$$
  • $$7, 24, 25$$
  • $$13, 26, 29$$
Which of the following number is not a perfect square?
  • $$1444$$
  • $$3136$$
  • $$961$$
  • $$2222$$
Which of the following cannot be the unit digit of a perfect square number?
  • $$6$$
  • $$1$$
  • $$9$$
  • $$8$$
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