Squares and Square Roots – Class 8 /Maths

Chapter 6 of CBSE/NCERT Maths is about squares and square roots. Here in this lesson you can find out practice problems for this chapter.

CBSE CLASS 8 MATHEMATICS
Squares and Square Roots – Chapter 6/ Worksheets
Fill in the blanks:

1. A perfect square number between 60 and 70 is ——————-
2. If a number has 2 or 8 in the ones place then their square ends in ———–
3. The number of zeroes in the square of 40 is ———-
4. The square root of 196 is ————-
5. The number of perfect squares between the squares of the numbers 12 and 13 is ———————
   Answer the following:
6. What will be the one’s digit in the square of the following numbers?
   a) 1234
   b) 9106
7. The square of which of the following numbers would be an odd number/an even number?
   a) 727
   b) 158
   c) 269
   d) 1980
8. Without calculating the square roots, find the number of digits in the square root of the following numbers?
   a) 25600
   b) 100000000
9. What will be the number of zeros in the square of the following numbers?
   a) 60
   b) 400
10. Is 90 a perfect square?

ANSWERS:

1. 64
2. 4
3. 2
4. 14
5. 24
6. a) 6
   b) 6
   Because when a square number ends in 6, the number whose square it is, will have either 4 or 6 in unit’s place.
7. a) Odd number
   b) Even number
   c) Odd number
   d) Even number
8. a) 3
   b) 5
9. a) 2
   b) 4
10. We have 90 = 2 x 3 x 3 x 5
    The prime factors 2 and 5 do not occur in pairs. Therefore, 90 is not a perfect square.