Question

1. Following number line shows the temperature in degree celsius (°C) at different places
(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
MATHEMATICS
EXERCISE 1.1
7 Bengaluru
on a particular day.
Ooty
Shimla
nlag
St
25
20
15
Lahulspitis
Srinagar,
10
5
0
-10
5
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?
from norrect answers and negative marks are given​

Answer 1

Answer:

The temperature of the hottest place = 22°C

The temperature of the coldest place = -8°C

Difference = 22°C – (-8°C)

= 22°C + 8°C = 30°C

(c) Temperature of Lahulspriti = -8°C

Temperature of Srinagar = -2°C

∴ Difference = -2°C – (-8°C)

= -2°C + 8°C = 6°C

(d) Temperature of Srinagar = -2°C

Temperature of Shimla = 5°C

∴ 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

Answer 2

The temperature of the hottest place = 22°C

The temperature of the coldest place = -8°C

Difference = 22°C – (-8°C)

= 22°C + 8°C = 30°C

(c) Temperature of Lahulspriti = -8°C

Temperature of Srinagar = -2°C

∴ Difference = -2°C – (-8°C)

= -2°C + 8°C = 6°C

(d) Temperature of Srinagar = -2°C

Temperature of Shimla = 5°C

∴ Temperature of the above cities taken together

= -2°C + 5°C = 3°C

Temperature of Shimla = 5°C

Hence, the temperature of Srinagar and imla taken together is less than that of Shimla by 2°C.

i.e., (5°C – 3°C) = 2°C