NCERT Solutions for Class 1 Maths Chapter 12 How Much Can We Spend

Question 1. Riya started to count the number of coins Rs. 1, Rs. 2, Rs. 5, Rs. 10 and Sahil started to count notes of Rs. 10, Rs. 20, Rs. 50 and Rs. 100. Look at these coins and notes, and write their denominations below.
Answer:
The values (denominations) of the coins and notes shown are:
* Coins: Rs. 1, Rs. 2, Rs. 5, and Rs. 10.
* Notes: Rs. 10, Rs. 20, Rs. 50, and Rs. 100.
In simple words: We can use different coins (like Rs. 1, 2, 5, 10) and paper notes (like Rs. 10, 20, 50, 100) to buy things.

Exam Tip: Always look at the number printed on a coin or note to find out its value.

Rahim Kaka — The Toy Seller

Question 2. Solve the following questions based on the toy prices:
A. One ball costs Rs. 20. Riya gives ________ coins of Rs. 5 for the ball. Sahil gives ________ note of Rs. 10 for the ball.
B. Name the toys you can buy for Rs. 10.
C. Name the toys you can buy for Rs. 20.
D. If the cost of a car is Rs. 14 and Riya has Rs. 10 with her, how much more money does she need to buy the car?
E. Riya and Sahil together have Rs. 30. Write the name of the toys which they can buy.
Answer:
Let's solve these shopping questions based on Rahim Kaka's toy cart prices:
* A. Buying a ball (Rs. 20):
- Riya gives 4 coins of Rs. 5 because four 5-rupee coins make 20 rupees. (5 + 5 + 5 + 5 = 20)
- Sahil gives 2 notes of Rs. 10 because two 10-rupee notes make 20 rupees. (10 + 10 = 20)
* B. Toy for Rs. 10: You can buy a Flute because its price tag is Rs. 10.
* C. Toy for Rs. 20: You can buy a Ball because its price tag is Rs. 20.
* D. Extra money needed for car (Rs. 14): Riya has Rs. 10. More money needed: Rs. 14 - Rs. 10 = Rs. 4. She needs Rs. 4 more.
* E. Toys for Rs. 30: Riya and Sahil can buy a Ball and a Flute together because Rs. 20 + Rs. 10 = Rs. 30.
In simple words: We check the price tags of toys to see what we can buy with our coins and notes.

Exam Tip: Subtract the money you have from the cost of the toy to find how much more money you need.

Question 3. Find the total amount and tick (✔) the correct option.
* Row 1: Two Rs. 1 coins and one Rs. 5 coin. (Options: 11, 7, 3)
* Row 2: One Rs. 10 note and three Rs. 2 coins. (Options: 13, 18, 16)
* Row 3: Three Rs. 5 coins and two Rs. 2 coins. (Options: 9, 19, 17)
Answer:
Let's calculate the total amount for each group of money:
* Row 1: One Rs. 5 coin and two Rs. 1 coins make 5 + 1 + 1 = Rs. 7. So, 7 is the correct option.
* Row 2: One Rs. 10 note and three Rs. 2 coins make 10 + 2 + 2 + 2 = Rs. 16. So, 16 is the correct option.
* Row 3: Three Rs. 5 coins and two Rs. 2 coins make 5 + 5 + 5 + 2 + 2 = Rs. 19. So, 19 is the correct option.
In simple words: We add up the values of all the coins and notes in each box to find the total amount of money.

Exam Tip: Count the largest coins or notes first, then add the smaller coins to find the total quickly.

Question 4. Fill or draw the amount in different combinations using the given currency. (Rs. 20, Rs. 10, Rs. 13, Rs. 8)
Answer:
Here are different combinations of coins and notes to make each target amount:
* To make Rs. 20:
- Combination 1: Two Rs. 10 notes (10 + 10 = 20)
- Combination 2: One Rs. 10 note and two Rs. 5 coins (10 + 5 + 5 = 20)
- Combination 3: Four Rs. 5 coins (5 + 5 + 5 + 5 = 20)
- Combination 4: Ten Rs. 2 coins (2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 = 20)
* To make Rs. 10:
- Combination 1: One Rs. 10 note (10 = 10)
- Combination 2: Two Rs. 5 coins (5 + 5 = 10)
- Combination 3: Five Rs. 2 coins (2 + 2 + 2 + 2 + 2 = 10)
* To make Rs. 13:
- Combination 1: One Rs. 10 note and three Rs. 1 coins (10 + 1 + 1 + 1 = 13)
- Combination 2: Two Rs. 5 coins and three Rs. 1 coins (5 + 5 + 1 + 1 + 1 = 13)
- Combination 3: Six Rs. 2 coins and one Rs. 1 coin (2 + 2 + 2 + 2 + 2 + 2 + 1 = 13)
* To make Rs. 8:
- Combination 1: One Rs. 5 coin and three Rs. 1 coins (5 + 1 + 1 + 1 = 8)
- Combination 2: Four Rs. 2 coins (2 + 2 + 2 + 2 = 8)
- Combination 3: Three Rs. 2 coins and two Rs. 1 coins (2 + 2 + 2 + 1 + 1 = 8)
In simple words: We can make the same amount of money in different ways by using different groups of coins and notes.

Exam Tip: Try to use larger value coins first to make combinations faster and with fewer items.

Question 5. Match the same amount by drawing a line.
A. One Rs. 10 note and one Rs. 5 coin.
B. One Rs. 5 coin and one Rs. 2 coin.
C. Two Rs. 5 coins and one Rs. 2 coin.
Answer:
Here are the correct matching pairs of equal money amounts:
* Pair A (Rs. 15): One Rs. 10 note and one Rs. 5 coin matches with one Rs. 10 note and one Rs. 5 note (since both equal Rs. 15).
* Pair B (Rs. 7): One Rs. 5 coin and one Rs. 2 coin matches with one Rs. 5 coin and two Rs. 1 coins (since both equal Rs. 7).
* Pair C (Rs. 12): Two Rs. 5 coins and one Rs. 2 coin matches with one Rs. 10 note and one Rs. 2 coin (since both equal Rs. 12).
In simple words: We find different groups of coins and notes that have the exact same total value and match them.

Exam Tip: Calculate the total value of the left group first, write it down, and then find the right group that equals the same value.

Question 6. Saving money is a good habit. Discuss. Try to make your own gullak with a spare box at your home with the help of your siblings or elders.
Answer:
Saving money is an excellent habit. It helps us prepare for the future and buy things we need without borrowing.
* How to make your own gullak (piggy bank):
1. Take an empty spare box (like an old cardboard shoe box or a plastic container).
2. Clean it nicely.
3. Ask an adult to help you cut a narrow slot on the top lid (just big enough for coins and notes to pass through).
4. Decorate your box using paint, stickers, or colorful papers to make it look like a cute piggy bank!
In simple words: Saving money in a little piggy bank (gullak) is a great habit. We can make a beautiful gullak at home using a clean spare box.

Exam Tip: Putting aside even a single coin of Rs. 1 or Rs. 2 every day in your gullak can grow into a big saving over time!