Table of Contents
6. The Junk Seller
Have you ever met a Kabariwali a woman who buys and sells junk? This is a true story told by Kiran, who has a junk shop in Patna.
I studied in a Hindi medium school in my village. My father wanted girls to study like boys. I loved Hindi and Science, but I hated Maths! Today Maths is most useful for my work. I could never imagine this in school.
What about you? Do you also find Maths difficult?
What is the most difficult thing in your Maths book?____________
What do you think is the easiest lesson?_____________
When I was young, my father died in an accident. So my mother worked as a servant in some houses. We had a difficult time.I had to leave school after Class VIII. I wanted to study more but my mother got me married.
My husband's family lived in a mud house. His two brothers and his sister did not go to school. He had a tea stall.
Find out: how much for a cup of tea?
Ask people and find out the cost of a cup of tea
 at a tea stall_____________
 at a hotel________________
If a person who runs a tea stall earns ₹ 30 in a day, how much will he earn in 10 days?_______________
And in a month?________________
How did you get the answer? Discuss.
I thought of starting my own business. I thought I should open a bangle shop or a tailor shop. But my uncle said that we could earn a lot by opening a junk shop.
In 2001, my motherinlaw and I opened a junk shop. We took a loan of ₹ 8000 for the shop.
Find out: what is a loan?
 Have you ever heard of someone taking a loan? For what?__________
 How much loan was taken?
 How much money was paid back?
Hariya and Babu want to buy a handcart for ₹ 300.
Hariya
I have taken a loan of ₹ 300 from a bank for six months. I will pay ₹ 51 every month to the bank.
Babu
But I have taken a loan of ₹ 300 from Chunnilal. After six months, I will pay back ₹ 360.
Who has to pay back more — Hariya or Babu?
People laughed and teased us about our work. They called it ganda kaam or'dirty business'. But I did not think so. I knew this idea would work.
Now we have a pucca house with electricity. We have a fridge, a TV and a gas stove. My husband's brothers, sister and also my daughter go to school.
How Much does Kiran Earn from 9 Rickshaws in a Day?
For 1 rickshaw she gets ₹ 20 per day.
So, for 9 rickshaws she will earn Rs_________.
How did you do it?
 So, for 9 rickshaws, she will get ₹ 200 ______=______ 
Think of some otherways to do it.
Encourage children to use their own strategies to solve such problems. There should be discussion on how they arrived at their answers.
 In a week how much does Kiran earn from one rickshaw?
 Do it mentally and write the answers.
2x6 = ____________ 20x6 = ___________ 2x60 = ___________ 3x42 = ___________  4x80 = ____________ 4x81 = ___________ 9x25 = ___________ 31x9 = ___________ 
I have my own small junk shop. I buy junk from junk collectors. They go from house to house and bring junk on handcarts. I then sell it at the big shop.
How Much to Pay for this Junk?
Kiran has bought some junk from junk collectors.
1 kg newspaper costs ₹ 5.30 kg cost ₹ 5 x 30 = ₹ 150. So for 31 kg she pays ₹___________
Look at the next page the rate list to see today's rates. Help Kiran to find out the cost of the junk.
 How much will Kiran pay for 31 kg newspaper?
This exercise encourages children to use different strategies (other than the standard algorithm) for doing multiplication.
 
Kind of Junk  Price of 1 Kg 
 ₹ 4/ 
 ₹ 5/ 
 ₹ 12/ 
 ₹ 170/ 
 ₹ 10/ 
 How much will Kiran pay for 42 kg newspaper?
 Also find the cost of:
a) 22 kg of plastic
b) 23 kg of waste paper
c) 12 kg of iron
Can you do this without writing?
Guess the total money
Kiran will pay to the junk
collectors. Will it be
— More than 600?
— Less than 600?
Smart Kiran Sells the Junk
Kiran sells her junk to a big shop. She checks the prices on her mobile phone and sells only when she gets a good price.
Today she has gone to sell plastic, newspaper, iron and brass at Dinu's big shop.
Dinu weighs 32 kg iron, 4 kg brass, 152 kg newspaper, 63 kg plastic.
 How much will Dinu pay for 63 kg plastic?
The rate of 1 kg plastic is ₹ 12. So the cost of 63 kg plastic will be ₹ 12x63.
 
Kind of Junk  Price of 1 Kg. 
 ₹ 6/ 
 ₹ 14/ 
 ₹ 180/ 
 ₹ 12/ 
 ₹ 4.50/ 
Remember, you used boxes to multiply two numbers in Class III.
 60  3 
10  60 x 10 600  3x 10 30 
2  60x2 120  3x2 6 
12 x 63 means 12 times 63. 12 times 60 is 720. So, the answer is more than 720. Also the answer is less .than 800. Can you tell why?.
Dinu added the numbers in the boxes:
600
120
30
+ 6
756
So, for 63 kg plastic, Dinu will give ₹ 756.
 Kiran bought 1 kg plastic for ₹ 10, but sold 1 kg plastic for ₹ 12. How much money does she earn on selling 1 kg plastic? ₹ _______________
So, how much money does she earn for 63 kg? ₹ ____________
 Kiran sells 32 kg iron
 How much money will Dinu pay for 32 kg iron?
 Kiran buys 1 kg iron for ₹ 12, but sells it for ₹ 14.
How much does she earn when she sells 32 kg iron? ₹ _____________________
 What will Dinu pay for 152 kg newspaper?
The rate of 1 kg newspaper is ₹ 6. So the cost of 152 kg newspaper is ₹ 6 x 152.
6 x 100 = 600. So, the answer is more than 600. Is the answer less than 1000? How did you guess?.
Dinu writes:
 100  50  2 
6  100x6 600  50x6 300  2x6 12 
Then he adds the numbers in the boxes:
600
300
+12
912
I bought 1 kg newspaper for ₹ 5, but sold it for ₹ 6.
How much money did I earn by selling 152 kg of newspaper?
So, for 152 kg newspaper he will give Kiran ₹ 912.
 What does Dinu pay for brass?
How much money will Dinu pay for 4 kg brass? ________________ 


First guess the answer and then calculate:
 37 × 18 =
 45 × 24 =
 69 × 52 =
 77 × 55 =
 142 × 5 =
 382 × 3 =
 2 × 175 =
 4 × 206 =
Fill My Diary
Kiran bought some junk from the junk collectors. She paid them ₹ 841. She sold the junk at Dinu's big shop and Dinu gave her these notes and coins.
Kiran wrote the record in her diary.
Money I paid — ₹ 841
Money I got— ₹ 600
— ₹ 150
— ₹ 140
— ₹ 60
— ₹ 40
— ₹ 4
Total ₹ 994
₹ 994
– ₹ 841
Money I earned: ₹ 153
Later she paid ₹ 919 to the junk collectors. When she sold the
junk she got these notes and coins from Dinu.
28 coins of
5 notes of
81 notes of
91 notes of
Now you make a record in her diary.
Find out how much she earned this time.