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Maths Class 8
(Q.1) Using
identity find the value of (7.2)2
(Q.2) Express 212
as the sum of two consecutive integers
(Q.3) Simplify 3a
(4a -5) + 3 and find its value for a = 3.
(Q.4) Simplify using suitable identity
for (7x – 8y)2 + (7x +8y)2
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(a) 98x2 + 128y2(b) 98x2 + 128 xy(c) x2 + y2 + 128(d) 98x2 + 98y2 +
128
(Q.5) There are 100 students in a hostel
food provision for them is for 15 days. How long will there provision last if
20 more join the groups?
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(Q.6) 12 men can dig a trench in 8 days.
How many men can dig the same in 6 days?
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(Q.7) A garrison of 500 men had
provision for 24 days. However, a reinforcement of 300 men arrived. How long
the food will last?
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(Q.8) At 60 km/hour a car takes 2 hours
to reach its destination. How long will the car take if it travel at a speed
of 80 km/hours.
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(Q.9) Bottles made by a
factory in 63 days are 315. How manybottles can it make in 82 days?
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(Q.10) The value of
(-4)5/ (-4)6 is
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( 1 mark )
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| (Q.11) What will be the number of zeros in the square of 400. |
(Q.12) Multiplicative
inverse of 5-3 is
(Q.13) Find ‘a’ Such
that (-5)a+2 x (-5)4 = (-5)9.
(Q.14) Internal
measure of a cuboidal room is 7m,5m,4m . Find the total cost of white washing 4
walls of a room is the cost of white washing is Rs. 5 per m2.
(Q.15) Find the area
of a rhombus whose diagonals are of measurements 6 cm and 8 cm
(Q.16) Curved surface area of a right circular
cylinder height 35 cm is 121 cm2, then the radius of its base is
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(a) 55 cm. (b) 5.5 cm. (c) 5 cm. (d) 0.55 cm.
(Q.17) The height of a triangle whose
base is 60 cm and whose area is 600 cm2:
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(a) 24 cm. (b) 20 cm. (c) 12 cm. (d) 10 cm.
(Q.18) How many numbers lie between squares of 99 and 100
(Q.18) How many numbers lie between squares of 99 and 100
(Q.21) How many
numbers are there between 52 and 62
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