Table of Contents
8. Tens and One
Help me!
Uncle, I want to buy pencils for 18 rupees. I have just 10-rupees notes and 1-rupee coins. How many notes and coins should I give you?
18 rupees means 1 note of 10 rupees and 8 one-rupee coins.
How many notes and coins do I need to give 35 rupees?
You give me three 10-rupee notes and 5 coins of one rupee.
Ok, uncle if…
Hey Just tell me, how many pencils do you want?
None! Thank you Uncle, for helping me with my homework.
Can you do this without Uncle's help? Draw the10-rupee notes and 1-rupee coins you will give for these things.
Do similar exercises in the class with the help of play money.
Practice Time
I will say a number. Guess the break-up.
OK, you say it, I will do it.
Sixty-four?
60 + 4
Twenty-Five
20 + 5
What about 12? How will you do that?
See, for 64 and 25 the number names tell us the break-up. But uhm.. twelve is different. So are eleven and nineteen.
Now you write these and also say them aloud.
27 = _____ + 7
31 = 30 + _____
54 = _____ + _____
_____ = 90 + 9
36 = _____ + _____
_____ = 80 + 2
You try writing the break-up far these.
12 = 10 + 2
19 = _____ + 9
11 = _____ + _____
_____ = 10 + 7
Bangle Throw!
Karma and Gesar are playing a bangle game. Karma has thrown the bangle on the dots.
Each big red dot is equal to 10 points. Each small green dot is equal to 1 point.
The dots inside the bangle are
Dots |
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Points | 40 | 4 |
So, Karma has got 44 points.
They throw the bangle twice each. Here are their points.
Throw | Karma | Gesar | Winner |
First | 44 | 13 | Karma |
Second | 16 | 32 | Gesar |
You can play this game with your friend using the board above. Write your points for each throw.
Throw | My points | My friend's points | Winner |
First |
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Second |
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Third |
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Fourth |
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Fifth |
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Sixth |
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The Flute Man and the Rats
1
2
I want someone to catch the rats in a basket. For each rat you get one gold coin.
3
I will do it.
What! With a flute
4
5
My reward Sir! I have collected 80 rats.
But, how did you count so many rats?
Simple! I used these cards.
I counted one rat and kept one 1 card in my pocket.
1 for one rat
for two rats for how many rats?
for how many rats? _____
When I had 10 cards, I changed it with this card 10 in my pocket.
Then came 7 more rats. I then had in my pocket
a) 23
b) 47
c) 55
d) 63
e) 72
f) 80
Encourage children to make token cards and use them in different exercises.
The King gave him gold coins.
These are not eighty coins!
Here! Enjoy your rats.
Clean School Day
We have to clean our school today. We make teams. Each team has 10 students.
Our team will clean the best! Here we go! Rub and Scrub!
The numbers of students in all the classes are:
Class 1 | 53 |
Class 2 | 42 |
Class 3 | 35 |
Class 4 | 54 |
Class 5 | 26 |
How many teams will there be in each class? How many students will be left? Write here.
| How many teams? | Students left |
Class 1 |
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Class 2 |
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Class 3 |
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Class 4 |
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Class 5 |
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- How many students are left in all?
- How many more teams can be made with all these students left?
Practice Time: Teams of Ten in Your School
- Find out the number of children in each class of your school.
- Make teams of ten for each class.
- How many children are left in each class?