Question

(b) Number of jumps required to reach back can be calculated as:
4-2-4-2 + 4 = 8
i.e, 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 Lch 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 750,000
4 Complete the following table
-6
-3
-2
0
2
5.
1
3
8
-1
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. I 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
aftemoon?
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. A monkey 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?
(c) The moves in (i) and (11) have been shown in (a) and (b) above. The sum 8 m​

Answer 1

Answer:

bhai ye kya h

Step-by-step explanation: