Page 168 - ICSE Math 4

5. Solve the following word problems.
(a) A race began at 10:15 a.m. and fi nished at 11:05 a.m. What is the dura on of
the race?

(b) Aman went for a movie which started at 3:20 p.m. The movie was 2 hours and
40 minutes long. At what me did the movie end?

(c) Shivam started playing football at 4:50 in the evening and fi nished playing at
6:20 p.m. For how long did he play football?

(d) Hiten is watching a cartoon that started at 5:15 p.m. If the cartoon ends a er
30 minutes, at what me does it end?

(e) Vani bakes a cake. She keeps it in the oven at 12 noon and sets the timer for
45 minutes. At what me will her cake be ready?

Temperature

Temperature is the measure of degree of hotness or coldness of a body.
Temperature is measured in either degree Celsius (°C) or in degree Fahrenheit (°F).

We measure the temperature of a body using a device called thermometer.

There are various types of thermometers. Since degree Remember
Celsius and degree Fahrenheit are the two standard The thermometer that

units used for measuring temperature, let’s learn about we use for measuring
Celsius thermometer and Fahrenheit thermometer. These our body temperature
is called clinical
thermometers have a lower fi xed point and an upper fi xed
thermometer.
point showing the minimum and maximum temperatures
that can be recorded.
100°C
On the Celsius scale, 0°C denotes the freezing Boiling point of water
point of water and 100°C denotes the boiling Celsius
point of water. Each division denotes 1 degree
Celsius or 1°C.
0°C
Freezing point of water

212°F
On the Fahrenheit scale, 32°F denotes the Boiling point of water
freezing point of water and 212°F denotes the Fahrenheit
boiling point of water.

So, we can say that 0°C = 32°F and 100°C = 212°F.
32°F
Freezing point of water

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