8
3 - Squares and Square Roots: Worksheet–3.1
Name:
Date:
1. Square of an odd number is always
[a] even
[b] odd [c] prime [d] composite
[c] 10000
[d] 100000
2. Which of the following is not a perfect square?
[a] 100
[b] 1000000
3. The smallest 4-digit squared number 1024 is a square of
[a] 22
4. The value of
[b] 32
[c] 33
[d] 41
72
is
98
4
9
5
6
[b] [c] [d]
7
7
7
7
5. Find the square of the following by direct multiplication.
[a]
a. 43
b. 25
6. Find the least square number which is exactly divisible by each of the numbers 4, 8 and 12.
7. Find the least number which must be added to 4931 to make it a perfect square.
8. Find the square root by long division method.
a. 361
b. 0.8464
c. 9.4864
9. Find square root of the following by prime factorisation.
a. 5184
b. 5929
10.Find the square root of 4225 and 3969. Hence evaluate
0.4225 − 0.3969
0.4225 + 0.3969
Grade:
Teacher’s signature:
d. 6724