Advertisements
Advertisements
प्रश्न
Think - How will you know the number of centimetres if you measure with a rope, shoe-string, thread etc.?
| My measurement | My friend's measurement | |
| Nose | ______ centimetres | ______ centimetres |
| Around the wrist | ______ centimetres | ______ centimetres |
| Around the head | ______ centimetres | ______ centimetres |
| Ear | ______ centimetres | ______ centimetres |
| Hand (tip of middle finger to wrist) | ______ centimetres | ______ centimetres |
Advertisements
उत्तर
This can be done by first measuring with a rope, shoe string, thread, etc. and then comparing with the scale.
| My measurement | My friend's measurement | |
| Nose | 3 centimetres | 3 centimetres |
| Around the wrist | 12 centimetres | 11 centimetres |
| Around the head | 36 centimetres | 35 centimetres |
| Ear | 5 centimetres | 5 centimetres |
| Hand (tip of middle finger to wrist) | 12 centimetres | 11 centimetres |
APPEARS IN
संबंधित प्रश्न
- Guess the distance between any two dots. How many centimetres is it? Now measure it with the help of a scale. Did you guess right?
- Which two dots do you think are farthest from each other? Check your answer.
- Which two dots are nearest to each other? Check your answer.
Have you heard about marathon races in which people have to run about 40 kilometres? People run marathons on roads because the track of a stadium is only 400 metres.
So, if you run a marathon on a stadium track, you will have to complete ______ rounds!
This is the long jump for boys.
Dhanu has the longest jump of 3 metres 40 cm. Gurjeet is second. His jump is 20 cm less than Dhanu's. Gopi comes third. His jump is only 5 cm less than Gurjeet's jump.
- How long are Gurjeet's and Gopi's jumps?
- Try and see how far you can jump.
- How far can you throw a ball?
- Look for a big ball, like a football or volleyball. How far can you kick it?
Here are the Indian Records and World Records for some jumps.
| Sports | World Record | Indian Record |
| High Jump (Men) | Javier S. (2m 45 cm) | Chandra Pal (2m 17 cm) |
| Long Jump (Men) | Mike P. (8m 95 cm) | Amrit Pal (8m 8 cm) |
| High Jump (Women) | Stefka K. (2m 9 cm) | Bobby A. (1m 91 cm) |
| Long Jump (Women) | Galina C. (7m 52 cm) | Anju G. (6m 83 cm) |
Find out from the table -
How many centimeters higher should Bobby A. jump to reach 2 meters?
[Remember that 1m = 100 cm
Half metre = ?]
Here are the Indian Records and World Records for some jumps.
| Sports | World Record | Indian Record |
| High Jump (Men) | Javier S. (2m 45 cm) | Chandra Pal (2m 17 cm) |
| Long Jump (Men) | Mike P. (8m 95 cm) | Amrit Pal (8m 8 cm) |
| High Jump (Women) | Stefka K. (2m 9 cm) | Bobby A. (1m 91 cm) |
| Long Jump (Women) | Galina C. (7m 52 cm) | Anju G. (6m 83 cm) |
Find out from the table -
Galina's long jump is nearly ______.
How high can a plane fly? Can it fly higher than Mount Everest which is about 9 km high?
In how many steps will Dorji cross the road?
You must have seen shopkeepers measuring cloth with a metre rod.
- Take a metre rod and a rope.
- Make a knot at one end of the rope.
- Keep the metre rod with the rope.
- Mark 1 metre on the rope and make a knot there.
- Now the length between the two knots is 1 metre. This is your metre-rope.
If you don't get a metre rod use a measuring-tape and mark 100 centimetres on the rope. 100 centimetres are equal to a metre, so you get the metre-rope.
Activity 2
Some Class III children have marked a 1 metre height on the wall of their class.
You can also mark 1 metre on your class wall.
The animals in the picture had a competition. The animal who had the longest tail won a prize. Now who do you think won the first prize and who won the second? Just guess the length of the longest tail.
