HALVES AND QUARTERS
Mintu cat and Mottu cat were friends. Once they stole a chapatti from Malini's kitchen. I will take it –said Mintu. No, I will take it – said Mottu. While they were quarrelling, there came Tittu Monkey. Hi! What is the problem? why are you quarrelling?–he asked. We don't know how to divide this chapati between us – the cats said. OK! don't worry. I will divide the chapati equally for both of you–he said. Clever Tittu divided the chapati like this:
These are not equal, the left part is bigger – Mintu and Mottu said. Oh, no problem, I will make it equal – Tittu said. He then cut a part of the left piece and ate it.
Oh! Now the right part is bigger – the cats cried. I am sorry – said Tittu. He cut a part from the bigger piece and ate it. When there was only a small piece remaining, he said – This is my share for the work. Tittu then quickly ate the last piece and climbed the tree.
Rani got a chocolate. She divided it equally and gave half to her friend Reena.
How many pieces were left with Rani?
Take a piece of paper. Cut the sheet into two equal triangles so that each triangle is equal to half of the sheet.
Shade the two triangles with different colours.
In how many different ways can you cut a rectangle into half ?
Can you check if they are equal?
Can you check if they are equal?
Rajni's father brought a cake. She divided the cake into 4 equal parts–for herself, her brother Raju, her father and her mother
Altogether they get 3 parts out of 4, so we can write it as 3/4.
Kundu is a greedy man. Whenever he goes to the market, he wants to get more and more but doesn't want to spend much money. One day he wants to eat pumpkin halwa (sweet dish) He tries to buy a big pumpkin with only Rs10. He asks the first pumpkin seller the price of a big pumpkin.
First pumpkin seller – 1/4th of this pumpkin is for Rs 10.
Kundu –Eh! For Rs 10, you should give me 1/2 of this pumpkin. First pumpkin seller – Then you go to the next seller, he can give you 1/2 of such a big pumpkin for Rs 10. I keep only good quality pumpkins.
Kundu walks to the next seller and looks for a pumpkin of the same size. Kundu – How much of this pumpkin will I get for Rs10? Second pumpkin seller –Half.
Kundu – Eh! Why not give me 3/4?
Second pumpkin seller – Run away! Go, get your pumpkin from that man. He sells such bad vegetables that he will even give you a full pumpkin of this size for Rs 10.
The greedy Kundu walks to the next pumpkin seller. He looks at a pumpkin of the same size and asks him –will you give me this big one for Rs 10?
Third pumpkin seller – Why don't you climb the roof of that house? You can get pumpkins free from the plant itself!
Kundu is very happy. He climbs the roof of that house and then ...................
a) How much does 1/2 kg of tomatoes cost?
b) Which costs more –1/2 kg of onions or 1/4 kg of carrots?
c) What is the price of 3/4 kg of potatoes?
d) Keerthi is going for shopping. She has only Rs 20 with her. Can she buy all the things in her shopping list?
e)Make two questions yourself from price list.
1.
PRACTICE TIME
a) What part of the whole is coloured?Write below each shape.
b) Colour that part of the shape which is written below.
c) Cut in half
Draw a line which divides these shapes into half.
d) Colour half the number of shapes as shown here.
e) Colour 1/4 of these shapes.
f)Match the coloured part as shown.
g) Make the other half
1/2 of the picture is drawn here. Can you complete the picture by drawing the other half?
h) This is a quarter of a picture. Can you complete it? How many more quarters will you draw to complete it?
Half and Quarter of a Metre
Using your metre scale, cut a string of one metre.
How many centimetres long is the line?
So
1/2 metre= cm
1/4 metre= cm
3/4 metre= cm
Can you see that when we add 1/2 and 1/4 we get 3/4?
This bottle is full of milk and it holds one litre. The milk is put into 4 other bottles so that each bottle has 1/4 litre of milk.
Shan poured 1 litre of milk into two bottles so that the first bottle holds 3/4 litre and the other holds 1/4 litre.
2. In how many different ways can you balance this weight of 3/4 kg?
Kannan shaded some parts as shown. But his friend Mini says that it is wrong. Explain why it is wrong
PRACTICE TIME