1
Affiliation No.: 330550 School No.: 65545
PRIMUS PUBLIC SCHOOL
Affiliated to CBSE, New Delhi
South of Shiv Mandir, Khabra, Muzaffarpur, Bihar
HALF YEARLY EXAMINATION (2020-21)
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Class: VII Subject: Maths Full Marks: 80 Time : 2.5 Hours
1. Questions containing 3 marks each :
(a) Each side of a polygon is 2.9 cm in length and its perimeter is 17.4 cm. How many
sides does the polygon have ?
(b) A shopkeeper gains Rs. 1 on each pen and loses 40 paise on each pencil. He sells 45
pens and some pencils losing Rs. 5 in all. How many pencils does he sell ?
(c) What should be added to 15 2
3
to get 18 5
6
?
(d) 3 1
5
+ 2 1
10
- 1 1
2
-
1
4
= ?
(e) A film show lasted for 3 2
3
hours. Out of this time 1
1
2
hours was spent on
advertisements. What was the actual duration of film ?
(f) Milk is sold at Rs. 16 3
4
per litre. Find the cost of 6
2
5
litres of milk.
(g) Express −247
228
in standard form.
(h) Find x such that −3
8
and
−24
are equivalent rational numbers.
(i) List six rational numbers between −4
5
and −2
3
(j) (
13
8
x
12
13
) + (
−4
9
x
3
−2
) + (
7
6
x
1
−7
) = ?
2. Questions containing 5 marks each :
(a) Simplify : 16×2
+1−4×2
16 ×2
+2−2×2
+2
(b) If 9
×3
2×3
−(27)
)
(3
3)
5−2
3
=
1
27
, find n.
(c) Add (3
2 −
1
5
+
7
3
) + (−
1
4
2 +
1
3
−
1
6
) + (−2
2 −
1
2
+ 5)
(d) Take away (
8
5
2 −
2
3
3 +
3
2
− 1) from (
3
5
−
3
2
2 +
2
3
+
1
4
)
(e) A number has two digits whose sum is 9. If 27 is added to the number, its digits gets
interchanged. Find the number.
(f) Two equal sides of a triangle are each 5 metres less than twice the third side. If the
perimeter of the triangle is 55 metres. Find the length of its side.
(g) The ages of A & B are in the ratio 5:7. Eight years ago, their ages were in the ratio
7:13. Find their present ages.
(h) A man sale two radios at Rs. 4800 each. On one he gains 20% and on the other he
loses 20%. Find the gain or loss percent in the whole transaction.
(i) In the given figure, EF||GH, EAB = 650 and ACH=1000
.
Determine (i) ABC (ii) ACB (iii) BAC (iv) CAF
E A F
650
1000
G B C H
(j) A room 5m long and 4m wide is surrounded by a verandah. If the verandah occupies
an area of 22m2
, find the width of the verandah
Answers
Answered by
7
Answer:
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