2
Paying with coins
Joyful Mathematics: Chapter 12
GoalMake an amount in different ways with coins.
New words
amount · how much moneyaltogether · all the money addedway · a different set of coins
Explanation
We can pay the same amount in different ways. To pay ₹10 we can use one ₹10 coin. We can also use two ₹5 coins. Or ₹5, ₹2, ₹2 and ₹1. Add the values to check. All of them make ₹10.
Worked examples
₹5 and ₹2 together make ₹7.
₹5, ₹2 and ₹1 together make ₹8.
A ₹10 coin and a ₹2 coin make ₹12.
Class activity
Many ways. Take ₹10 in coins or paper coins. How many different ways can you make ₹6? Try ₹5 and ₹1, then ₹2, ₹2 and ₹2. Show each way to a friend and add to check.
Practice
1
How much money is this altogether?
₹12.
2
How much money is this altogether?
₹7.
3
Show ₹9 using coins. Name one way.
₹5 + ₹2 + ₹2 = ₹9.
4
Which gives ₹10, ₹5 + ₹2 or ₹5 + ₹5?
₹5 + ₹5.
5
How much money is this altogether?
₹16.