Q.1 Following number line shows the temperature in degree Celsius (°C) at different places on a particular day.
number line
(a) Observe this number line and write the temperature of the places marked on it.
(b) What is the temperature difference between the hottest and the coldest places 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 the temperature at Shimla? Is it also less than the temperature at Srinagar? Solution:


Answer :

(A)
(a) Lahulspriti = -8°C
(b) Srinagar = -2°C
(c) Shimla = 5°C
(d) Ooty = 14°C
(e) Bangluru =22°C
(B)
Difference = 22°C-( -8°C) = 22°C+8°C =30°C
(C)
Difference = -2°C-( -8°C) = -2°C+ 8°C = 6°C
(D)
Temperature of the above cities taken together = -2°C + 5°C = 3°C
Temperature of Shimla = 5°C
Hence, the temperature of Srinagar and Shimla taken together is less than that of Shimla by 2°C.
i.e., (5°C – 3°C) = 2°C

NCERT solutions of related questions for Integers

NCERT solutions of related chapters class 7 maths

NCERT solutions of related chapters class 7 science