Question

1. Following number line shows the temperature in degreesus Cardifferent
on a particular day
Shimlas
Lahulspitis Srinagars
Ooty
Bengadu
-10
20
1457 10 15
(a) Observe this number line and write the temperature of the places marked
(b) What is the temperature difference between the hottest and the coldest pas
among the above?
(c) What is the temperature difference between Lahulspiti and Srinagar?
(d) Can we say temperature of Srinagar and Shimla taken together is less than
ure at Shimla? Is it alsnless than the temperature Srinagar?​

Answer 1

Answer:

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Answer 2

NCERT Solutions for Class 7 Maths Chapter 1: Integers

Exercise 1.1 (Page number 4)

Question1. Following number line shows the temperature in degree celsius (°C) at different places on a particular day.

(a) Observe this number line and write the temperature of the places marked on it.

Solution (a): CHECK THE ATTACHMENT

(b) What is the temperature difference between the hottest and the coldest places among the above?

Solution (b):

The hottest place is Bangalore with temperature 22o C

The coldest place is Lahulspiti with temperature ‒ 8o C

Temperature difference = (22o C) ‒ (‒ 8o C) = 30o C.

(c) What is the temperature difference between Lahulspiti and Srinagar?

Solution (c):

Lahulspiti’s temperature = ‒ 8o C

Srinagar’s temperature = ‒2o C

Temperature difference = (‒2o C) ‒ (‒ 8o C) = 6o C.

(d) Can we say temperature of Srinagar and Shimla taken together is less than the temperature at Shimla? Is it also less than the temperature at Srinagar?

Solution (d):

Srinagar’s temperature = ‒ 2o C, Shimla’s temperature = 5o C

Temperature of Shimla and Srinagar when taken together = (5o C) + (‒ 2o C) = 3o C

Since, Srinagar’s temperature = ‒2o C

Clearly, Srinagar’s temperature is greater.