EXERCISE-6
1. Find the square root of the following by means of factors and by long division method:
(a) 100
(b) 1225
(c) 625
(d) 1296
(e) 144
9
144
(g) 4096
3844
(h) 529
(1)
(1)
169
196
2. Which of the following notations is incorrect?
(a) V625 = 25 (b) 625 = -25 (c) +1625 = +25 (d) 1625 = 25
16
3. Simplify:
(a) 45+4
(b) 520+9
(c)
√49 + √169
√64 + √49
4. Find the smallest number by which the number 1100 must be multiplied (or divided) so that the
product (or quotient) becomes a perfect square. Also in each case find the square root of the,
perfect square so obtained.
5. Find the least number by which 9408 must be divided so that it becomes a perfect square. Also,
find the square root of the perfect square so obtained.
6. A school collected 4096 as fees from its students. If each student paid as many rupees as there
were students in the school, how many students were there in the school?
7. State True or False:
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Answer:
class 7,8,9,10
ok
Q-1 U don't know
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