Class 8 Squares And Square Roots CBSE Questions & Answers

Class 8 · Squares And Square Roots

This is Mathematics Class 8 Squares and Square Roots CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Without adding, find the sum. 1 + 3 + 5 + 7 + 9 + 11 + 13
  • A
    36
  • B
    25
  • C
    49
    Correct
  • D
    16
2
Find the square roots of 729.
  • A
    27
    Correct
  • B
    30
  • C
    28
  • D
    29
3
In general, if a natural number m can be expressed as n2, where n is also a natural number, then m is a __________.
  • A
    positive number
  • B
    cube number
  • C
    none of these
  • D
    square number
    Correct
4
None of the square numbers end with _________ at unit’s place.
  • A
    2
  • B
    7
  • C
    3
  • D
    2, 3, 7 or 8
    Correct
5
If a number has 1 or 9 in the unit’s place, then it’s square ends in ________.
  • A
    none of these
  • B
    9
  • C
    3
  • D
    1
    Correct
6
________ is the inverse operation of square.
  • A
    none of these
  • B
    Cube root
  • C
    Square
  • D
    Square root
    Correct
7
Find the perfect square numbers between 50 and 60.
  • A
    49
  • B
    64
  • C
    none of these
  • D
    No number
    Correct
8
2025 plants are to be planted in a garden in such a way that each row contains as many plants as the number of rows. Find the number of rows.
  • A
    none of these
  • B
    55
  • C
    45
    Correct
  • D
    65
9
2025 plants are to be planted in a garden in such a way that each row contains as many plants as the number of rows. Find the number of plants in each row.
  • A
    45
    Correct
  • B
    none of these
  • C
    65
  • D
    55
10
Find the greatest 4-digit number which is a perfect square.
  • A
    9990
  • B
    9999
  • C
    none of these
  • D
    9801
    Correct
11
What will be the number of zeros in the square of 400?
  • A
    1
  • B
    2
  • C
    4
    Correct
  • D
    3
12
How many natural numbers lie between \({\text{1}}{{\text{1}}^{\text{2}}}\) and\({\text{1}}{{\text{2}}^{\text{2}}}\)?
  • A
    44
  • B
    22
    Correct
  • C
    11
  • D
    33
13
Find the square of 42.
  • A
    1764
    Correct
  • B
    none of these
  • C
    84
  • D
    1700
14
Without adding, find the sum. 1 + 3 + 5 + 7 + 9 + I1 + 13 + 15 + 17 +19
  • A
    49
  • B
    81
  • C
    100
    Correct
  • D
    64
15
Find the square roots of 529.
  • A
    24
  • B
    none of these
  • C
    25
  • D
    23
    Correct