Question

(
c
)
The
moves
in
(
1
)
and
(
ii
)
have
been
shown
in
(
a
)
and
(
b
)
above
.
The
sum
8
in
(b) Number of jumps required to reach back can be calculated as:
4-2 +42 +4 = 8
ie, he has to jump 5 times to reach back.
(11) represents going up by 8 steps.
EXERCISE 1.1
(d) 35 and -11
(d) 7 + (-5)-1
1. Find the sum of the following integers:
(a) 8 and 21
(b) 25 and -13
(c) -16 and 8
2. Evaluate the following either by direct method or by using a number line:
(a) 3+ (-2)
(b) -3+ 4+ (-7) (c) 8-(-2) - 3
3. Represent the following as integers with appropriate sign:
(a) Temperature of Leh is 13°C below 0°C. (b) A well is 130 m deep
(c) The height of TV tower is 90 m.
(d) A gain of 50.000
4. Complete the following table:
-3
-2
-1
0
2
+
7
1
3
8
-5
5. Arrange the following integers in descending order:
(a) 45.34. -890, 219
(b) 678.980.432. -675
6. The midnight temperature of Delhi in the month of December was 10°C. It dropped by 4°C
in the next three hours. What was the temperature after 3 hours?
7. Moming temperature on a particular day in Chandigarh in the month of October was recorded
as 13.5°C. However, by afternoon it rose by 7°C. What was the temperature recorded in the
afternoon?
8. A plane is flying at a height of 5,850 m. A submarine is floating at a depth of 700 m below
the sea level exactly below the plane at a particular time. What is the distance between the
plane and the submarine?
9. In a quiz, 2 positive marks are allotted for each correct answer and -1 for
each incorrect answer in four rounds of quiz, Reshma scored 45,-34.40
and 36 marks and Radha scored -42. 12,28 and 38 marks. Who scored
more marks?
10. Amonkey is trying to climb a pole measuring 15 m, which is greased. He
tries to climb 3 m and slips down 2 m every time. In how many attempts
will the monkey be able to climb 10 m of the pole?​

Answer 1

Answer:

what is this dear...........

Answer 2

Answer:

time over for phn plz follow me