CBSE Class 2 Mathematics: Chapter 8 - Tens and Ones NCERT Solutions
This chapter, 'Tens and Ones,' for CBSE Class 2 Mathematics, focuses on understanding place value and representing monetary amounts. Students will learn to break down numbers into tens and ones, and visually represent them using 10-rupee notes and 1-rupee coins. The exercises guide learners through calculating the total value of given notes and coins, reinforcing the concept of tens and ones in a practical, real-world context. These solutions provide step-by-step explanations to help students grasp how to count and represent money, aiding in their mathematical development and exam preparation.
Quick info
| Board | CBSE |
|---|---|
| Class | Class 2 |
| Subject | Mathematics |
| Session | 2026 |
| Language | English |
| Type | NCERT Solutions |
| Chapter | Chapter 8 |
Chapter summary
Chapter 8, 'Tens and Ones,' for Class 2 Mathematics, introduces students to the fundamental concept of place value using money. The NCERT Solutions cover exercises where students visually represent amounts using 10-rupee notes and 1-rupee coins. It also includes problems on calculating the total value of given combinations of notes and coins, reinforcing the understanding of tens and ones.
Learning outcomes
- Understand the concept of tens and ones in relation to money.
- Represent monetary amounts using 10-rupee notes and 1-rupee coins.
- Calculate the total value of given combinations of notes and coins.
- Apply place value concepts to solve practical problems involving money.
Topics covered
Paper topics
- Tens and Ones
- Place Value
- Money
- 10-Rupee Notes
- 1-Rupee Coins
- Representing Amounts
- Counting Money
- Addition of Money
Important topics
- Understanding Tens and Ones
- Representing Money with Notes and Coins
- Calculating Total Monetary Value
- Place Value in Money
PDF preview
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Questions and Solutions
Question 1
Rs 20
Rs 32
Rs 55
To represent the amounts using 10-rupee notes and 1-rupee coins, we break down each amount into tens and ones.
For Rs 20:
Rs 20 can be seen as 2 tens and 0 ones. So, you would draw two 10-rupee notes and zero 1-rupee coins.
For Rs 32:
Rs 32 can be seen as 3 tens and 2 ones. So, you would draw three 10-rupee notes and two 1-rupee coins.
For Rs 55:
Rs 55 can be seen as 5 tens and 5 ones. So, you would draw five 10-rupee notes and five 1-rupee coins.
Question 2
The image shows:
Two 10-rupee notes and three 1-rupee coins.
One 10-rupee note and three 1-rupee coins.
Two 10-rupee notes and seven 1-rupee coins.
Four 10-rupee notes and five 1-rupee coins.
We need to calculate the total amount for each set of notes and coins shown.
Set 1: Two 10-rupee notes and three 1-rupee coins.
Value of notes: 2 \times 10 = 20 rupees.
Value of coins: 3 \times 1 = 3 rupees.
Total amount: 20 + 3 = Rs 23.
Set 2: One 10-rupee note and three 1-rupee coins.
Value of notes: 1 \times 10 = 10 rupees.
Value of coins: 3 \times 1 = 3 rupees.
Total amount: 10 + 3 = Rs 13.
Set 3: Two 10-rupee notes and seven 1-rupee coins.
Value of notes: 2 \times 10 = 20 rupees.
Value of coins: 7 \times 1 = 7 rupees.
Total amount: 20 + 7 = Rs 27.
Set 4: Four 10-rupee notes and five 1-rupee coins.
Value of notes: 4 \times 10 = 40 rupees.
Value of coins: 5 \times 1 = 5 rupees.
Total amount: 40 + 5 = Rs 45.
Common mistakes
- Confusing the value of 10-rupee notes with 1-rupee coins.
- Errors in counting the total number of notes or coins.
- Difficulty in adding the values represented by different denominations.
Revision tips
- Practice drawing the correct number of 10-rupee notes and 1-rupee coins for each amount.
- Carefully count each denomination before calculating the total sum.
- Use real or play money to visualize the concepts of tens and ones.
- Review the examples to understand how to break down larger amounts.
Practice MCQs
Q1. How many 10-rupee notes are needed to make Rs 30?
Explanation: Each 10-rupee note represents 10 rupees. To make 30 rupees, you need 3 notes (10 + 10 + 10 = 30).
Q2. If you have two 10-rupee notes and three 1-rupee coins, what is the total amount?
Explanation: Two 10-rupee notes make Rs 20 (10 + 10 = 20). Three 1-rupee coins make Rs 3. The total is Rs 20 + Rs 3 = Rs 23.
Q3. What does the 'tens' place represent in the number 55?
Explanation: In the number 55, the digit 5 in the tens place represents 5 groups of ten, which is 50.
Q4. To represent Rs 55, how many 10-rupee notes and 1-rupee coins are needed?
Explanation: Rs 55 can be represented as 5 tens (5 x 10 = 50) and 5 ones (5 x 1 = 5). So, 5 notes and 5 coins are needed.
Frequently asked questions
What is the main concept taught in CBSE Class 2 Mathematics Chapter 8?
Chapter 8, 'Tens and Ones,' focuses on understanding place value by representing monetary amounts using 10-rupee notes and 1-rupee coins.
How do these NCERT Solutions help students?
These solutions provide clear, step-by-step explanations for representing and calculating money amounts, reinforcing the concepts of tens and ones for better comprehension and exam preparation.
What kind of problems are covered in this chapter?
The chapter covers problems where students need to draw the correct number of 10-rupee notes and 1-rupee coins for given amounts, and also calculate the total value of provided notes and coins.
Are the questions in the source document preserved?
Yes, all questions from the source document are kept exactly the same, including their numbering and the problems asked, while the solutions are rewritten for clarity.
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