CBSE Class 3 Mathematics
NCERT Solutions
Chapter – 8
WHO IS HEAVIER?
NCERT Solutions
Chapter – 8
WHO IS HEAVIER?
PAGE 113
Gur ( jaggery) and Groundnuts
Shabnam wants to eat jaggery (gur) and groundnuts.
One day she bought 1 kg. of jaggery and 1 kg. of groundnuts.
1. Are the groundnuts really more than the jaggery in weight or do they just look more?
Ans. The groundnuts are not really more than the jaggery in weight but they just look more.
2. 1 kg popcorn or 1 kg sugar?
Ans. For 1 kg popcorn, we require a bigger bag.
3. 1 kg peas or 1 kg potatoes?
Ans. For 1 kg peas a bigger is needed.
PAGE NO. 115
Guess
4. How many small tomatoes do you think could lift the pumpkin up?
Ans. Forty small tomatoes are enough to lift the pumpkin up.
5. How many big mangoes can balance the pumpkin?
Ans. Twenty big mangoes can balance the pumpkin.
6. How many pumpkins can balance you on the see-saw?
Ans. Ten pumpkins can balance me on the see-saw.
Now Guess
7. Name some of your classmates who you think weigh
(a) Almost the same as you
Ans. Mohit, Sanjeev, Suraj, Surekha, Suni.
(b) More than you
Ans. Rohit, Rajeev, Kamla, Ankit, Chandani.
(c) Less than you
Ans. Rajat, Naveen, Reena, Aditya.
8. How many books can you lift on one hand keeping your arm straight?
Ans. On lifting four books in one hand, I may keep my arm straight.
PAGE NO. 116
Double her weight
9. Now guess her weight and the answer the amount of sweets her parents distribute every Independence Day:
Ans.
Kunjamma’s age
|
Kunjamma’s weight
|
Amount of sweets
|
At Birth
|
3 kg
|
3 + 3 = 6 kg
|
1 year old
|
9 kg
|
9 + 9 = 18 kg
|
2 years old
|
13 kg
|
13 + 13 = 26 kg
|
3 years old
|
17 kg
|
17 + 17 = 34 kg
|
4 years old
|
22 kg
|
22 + 22 = 44 kg
|
5 years old
|
28 kg
|
28 + 28 = 56 kg
|
Activity Time
10. Make a list of things bought at your home. Find out how much of each thing at one time. These things can be rice, oil, chilli powder, sugar, milk, onions, ginger etc.
Ans.
Name of the thing
|
How much brought
|
Rice
|
5 kg
|
Atta
|
15 litres
|
Oil
|
5 kg
|
Sugar
|
2 kg
|
Salt
|
1 kg
|
Chilli powder
|
200 gms
|
Daal
|
1 kg
|
Peas
|
1 kg
|
Onions
|
1 kg
|
Ginger
|
250 gm
|
Tea
|
250 gm
|
Papad
|
250 gm
|
PAGE NO.119
11. Guess which of the following things weigh more than 1 kilogram? Which ones will weigh less than 1 kilogram (kg)?
Ans. Things which weigh more than 1 kg are School bag, a brick and a big pumpkin. Things which weigh less than 1 kg are Geometry box, slippers/shoes.
PAGE NO.120
12. Use your balance to find which of the following is heavier.
Ans. (a) A cricket ball is heavier than a water bottle.
(b) My shoe is heavier than my pencil box.
(c) My math book is heavier than my hindi book.
(d) My friend’s bag is heavier than that of mine.
13. Make a list of
(a) Things weighing less than half kg.
Ans. Things weighing less than half kg are socks, watch, belt, spectacles, slippers, gloves.
(b) Things weighing more than half kg.
Ans. Things weighing more than half kg are fan, chair, table, cot, television.
PAGE NO.121
14. Make a trip to your nearest junk dealer, vegetable shop and grocery shop. Have a look at the weights they use. Find out:
(i) Who uses the biggest weight?
Ans. A junk dealer uses the biggest weight.
(ii) Who uses the smallest weight?
Ans. The smallest weight is used in a grocery shop.
15. In which shop would you find the following types of weights? Discuss with your friends.
Ans. Such weights are used in the shop dealing with grains.
