Dass
& Brown World School
Class VIII
Mathematics - Assignment
1. The area of a trapezium is 180 cm2 and its
height is 9 cm. If one of the
parallel side is longer
than the other by 6 cm . Find
the length of the
longer of the parallel sides.
2. Verify Euler’s formula for Triangular pyramid.
3. Express the following rational number in
simplest form .
a) 
b) 
b)
4.
Find 10 rational number between 
and 
.
and .
5.
Suman had Rs 3000. She spent 
of her money
of her money
on notebooks and 
of the remainder on
of the remainder on
stationary items. How much money is left
with her.
6.
Find the multiplicative inverse of 
7.
Find x if 72x+1 ÷ 49 = 343
8.
The diameter of the sun is ( 1.4 x 109)m and the
diameter of earth is ( 1.2756x 107)m.
Show that the
diameter of sun is nearly 100 times the
diameter of
earth.
9.
Find the square root of 66049.
10.
What least number must be added to 5607 to make
the sum a prefect square.
11.
Find the square root of 0.4225
12.
If 
x4 + 1/x2
x4 + 1/x2
13.
Find the value of 
14.
Divide 2x2 + 8x – 5x – 5 by 2x2– 3x + 5
15.
The denominator of a rational number is greater than
its numerator by 3 . If 3 is subtracted
from numerator
and 2 is added to its denominator , the
new number
becomes
. Find original number.
. Find original number.
16.
Find C.P if SP= Rs 657.60 , loss = 4%
17.
At what rate % p.a will Rs 640 amount to 774.40 in 2
years ,when compounded annually.
18.
In how many years will Rs 6250 amount to Rs 7290 at
8% p.a is Rs 93 . Find sum
19.
In a hostel 75 students had food provisions for 24 days
If 15 students leave the hostel. For how
many days
would
the food last.
20.
Draw the graph P=3x
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