Long and Short

What is the central idea of the chapter "Long and Short"?

1. Understanding units of length, choosing suitable measuring tools, comparing measurements, and using them correctly in everyday life.
2. Learning only about weight.
3. Learning only about time.
4. Learning only about money.

If two ropes measure 2 m and 150 cm, which one is longer?

1. 150 cm rope
2. 2 m rope
3. Both are equal
4. Cannot be determined

Which unit is smaller than a centimetre?

1. Kilometre
2. Metre
3. Millimetre
4. Litre

Why do we measure length?

1. To know how long or short an object is
2. To know its colour
3. To know its taste
4. To know its smell

Which of the following is the shortest?

1. 10 cm
2. 25 cm
3. 1 m
4. 80 cm

Which measurement is equal to 3 metres?

1. 30 cm
2. 300 cm
3. 3 cm
4. 3,000 km

What should you do before measuring an object?

1. Guess without checking
2. Choose the correct measuring tool and unit
3. Close your eyes
4. Measure with your hand only

Which object would most likely be measured in metres?

1. Pencil
2. School building
3. Coin
4. Button

If a ribbon is 150 cm long, how many metres is it?

1. 1 m
2. 1.5 m
3. 2 m
4. 15 m

Which of the following is the longest?

1. 5 cm
2. 50 cm
3. 2 m
4. 20 cm

Which measuring tool is best for measuring the length of a notebook?

1. Thermometer
2. Measuring tape or ruler
3. Clock
4. Weighing scale

Which object is likely to be about one metre long?

1. An eraser
2. A classroom ruler
3. A table
4. A grain of rice

How many centimetres make one metre?

1. 10 cm
2. 50 cm
3. 100 cm
4. 1,000 cm

Which unit is most appropriate for measuring the distance between two cities?

1. Centimetre (cm)
2. Metre (m)
3. Kilometre (km)
4. Millimetre (mm)

Which unit is most suitable for measuring the length of a pencil?

1. Kilometre (km)
2. Metre (m)
3. Centimetre (cm)
4. Litre (L)