CBSE Class 1 > Class 1 Notes > Mathematics: NCERT (Joyful-Mathematics) > Chapter Notes: Making 10 (Numbers 10 to 20)
Chapter Notes: Making 10 (Numbers 10 to 20)
Introduction
- Imagine you have a bunch of toys. How do you know how many you have? You count them-1, 2, 3, 4, 5! Counting helps us know how many things are around us.
- We count everything-apples in a basket, steps we take, balloons at a party, and stars in the sky! Numbers help us keep track of things, compare groups, and even solve puzzles.
- Let's explore counting and see how numbers help us in everyday life!
Try yourself: How many dots are there on the ladybug?MULTIPLE CHOICE QUESTION
What is Zero?
- Imagine you have 3 chocolates and you eat them all. Now, how many are left? Zero! Zero means nothing or none. It shows that something is not there.
- We see zero everywhere! If there are zero apples in the basket, it means the basket is empty. When the countdown reaches zero, it means it's time to start!
- Zero is a special number that helps us in counting and math.
For example: Look at a tree. Three birds are sitting on a branch. One bird flies away-now, two are left. Another bird flies away-now, only one is left. When the last bird flies away, how many are left? Zero!
Bundle of Ten
A bundle of ten is a group of ten things that are all together in one place.
Example: You have a bunch of pencils scattered around your desk, but you need to keep them all together so you don't lose them. What do you do? You gather them up and tie them together with a rubber band, creating a bundle of ten.
Make a Group of 10
Look at all those delicious ice creams! But did you know that we can make them even more fun by counting them and grouping them into bundles of 10?
Now, let's take these 10 ice creams and make a bundle.
- Group of 1 ten is 10.
Group of 2 ten is 20.
- Group of 2 ten is 20.
Making 10 with Number Pairs
Let's play a finger-counting game! Hold up all 10 fingers-that's 10 in total! Now, what happens if you fold some down?
- If you fold 5 fingers, how many are still up? 5! So, 5 + 5 = 10.
- If you fold 4 fingers, how many stay up? 6! That means 6 + 4 = 10.
- What if you fold 2 fingers? You still have 8 up, so 8 + 2 = 10!
There are so many ways to make 10 using two numbers!
Question: Look at the images and write down the number pairs of 10.
Ans:
Counting from 10 to 20
Writing Numbers
Do you see all those colourful and yummy toffees?
There are so many toffees. Let's make a group of 10 and write 1 in tens place. Now, how many toffees are left? We write down 4 in the ones place. And what does this mean? It means that we have a total of 14 toffees!
More or Less
- When we say "more", we mean that there is a bigger amount of something. For example, if you have 5 apples and your friend has 7 apples, then your friend has more apples than you.
- On the other hand, when we say "less", we mean that there is a smaller amount of something. For example, if you have 10 pencils and your friend has 6 pencils, then your friend has fewer pencils than you.
Example 1: Count the number of balloons and tick the group with more objects.
The number of balloons in the first box is 16 and in the other box is 8. So the left group has more balloons.
Example 2:
Ans:
Addition
Example: Let's say we want to add 6 + 7.
To make it easier, we can imagine that we have two groups of sticks. We have 6 sticks in one group and 7 sticks in another group.
Now, we can bundle the sticks into a group of 10. We take 6 sticks and add 4 more to make a bundle of 10. We write down the number 1 in the tens place (the column on the left) to show that we have one bundle of 10. Then, we write down the number of sticks we have left in the ones place (the column on the right). In this case, we have 3 sticks left over.
Subtraction
The document Chapter Notes: Making 10 (Numbers 10 to 20) is a part of the Class 1 Course Mathematics for Class 1: NCERT (Joyful-Mathematics).
All you need of Class 1 at this link: Class 1
FAQs on Chapter Notes: Making 10 (Numbers 10 to 20)
| 1. What is the concept of zero and why is it important in mathematics? |  |
Ans. Zero is a number that represents the absence of quantity. It is important in mathematics because it serves as a placeholder in our number system, allowing us to distinguish between numbers like 10 and 1. Zero is also crucial for performing operations such as addition and subtraction, as it helps maintain the value of other numbers.
| 2. How can I teach my child to make a group of ten with numbers? | |
Ans. To teach your child to make a group of ten, you can use physical objects like blocks or counters. Start by showing them how to combine different pairs of numbers that add up to ten, such as 7 and 3, or 5 and 5. Encourage them to practice by grouping the objects in sets of ten and explaining that these combinations help in counting and basic addition.
| 3. What are some effective ways to help children count from 10 to 20? | |
Ans. One effective way to help children count from 10 to 20 is to use songs or rhymes that emphasize the numbers in that range. You can also use number charts or flashcards, and engage in counting games where they point to objects and count them aloud. Repetition and reinforcement through fun activities will help solidify their understanding.
| 4. How does making 10 with number pairs relate to addition and subtraction? | |
Ans. Making 10 with number pairs is essential for understanding addition and subtraction because it simplifies calculations. When children learn to recognize pairs of numbers that sum to ten, they can use this knowledge to solve larger problems. For example, knowing that 10 + 5 equals 15 can help them when subtracting from 15, as they can think of it as 15 - 10 = 5.
| 5. What strategies can be used to teach children about more or less in mathematical terms? | |
Ans. To teach children about more or less, you can use visual aids like number lines or counters. Engage them in comparing groups of objects, asking questions like "Which group has more?" or "Which group has less?" You can also incorporate games that involve sorting or categorizing items based on quantity, reinforcing their understanding of these concepts through hands-on experience.
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Apr 21, 2026 Last updated
Document Description: Chapter Notes: Making 10 (Numbers 10 to 20) for Class 1 2026 is part of Mathematics for Class 1: NCERT (Joyful-Mathematics) preparation. The notes and questions for Chapter Notes: Making 10 (Numbers 10 to 20) have been prepared according to the Class 1 exam syllabus. Information about Chapter Notes: Making 10 (Numbers 10 to 20) covers topics like and Chapter Notes: Making 10 (Numbers 10 to 20) Example, for Class 1 2026 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Chapter Notes: Making 10 (Numbers 10 to 20).
Introduction of Chapter Notes: Making 10 (Numbers 10 to 20) in English is available as part of our Mathematics for Class 1: NCERT (Joyful-Mathematics) for Class 1 & Chapter Notes: Making 10 (Numbers 10 to 20) in Hindi for Mathematics for Class 1: NCERT (Joyful-Mathematics) course. Download more important topics related with notes, lectures and mock test series for Class 1 Exam by signing up for free. Class 1: Chapter Notes: Making 10 (Numbers 10 to 20)
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