Cbse Class 3 Maths Notes Chapter 2 Fun With Numbers

What are Numbers?

• A number is an arithmetic value expressed by a word, symbol, or figure that represents a specific quantity and is used in counting and calculating.

• Numbers can be single-digit numbers, two-digit numbers, three-digit numbers, and so on.

• Example: 4 and 5 are single-digit numbers. 34 and 99 are two-digit numbers whereas 897 and 100 are three-digit numbers.

Number Names

• In an alphabetical format, number names are used to represent numbers. 

• Each number is denoted by a distinct word. 

Place Value of a Digit

• To write a number in English, we must first understand the place value of each digit in the number.

• Place value refers to the position or location of a digit in a number.

• Each digit has a specific place in a number.

• When we represent the number in its general form, the position of each digit will be expanded.

• Units, tens, hundreds, thousands, ten thousand, and so on are the order of place value of digits of a number from right to left.

• Example: See the below figure for understanding the place value of each digit in the number 1468. 

Place value 

Example of Number Names 

Comparing Numbers

• Identifying a number that is smaller or greater than the rest is referred to as comparing numbers. 

• For example, if we compare numbers from a hundred to two hundred then a hundred is the smallest number and two hundred is the largest number.

• We can compare numbers in a variety of ways using counting or counting the number of digits, using place values of the numbers, and so on.

Patterns

• Numbers can form interesting patterns.

• To find the pattern, we must examine the difference between one number and the one that follows it. For example, consider a pattern 5, 10, 15, 20, 25,…. . In this, the difference between two consecutive numbers is 5.

• There can be two kinds of patterns: Forward counting pattern and Backward counting pattern. 

• A forward counting pattern means numbers will increase in sequence. For example, 2,4,6,8,10 and so on (here in the pattern we are adding two in each term).

• A backward counting pattern means numbers will decrease in sequence. For example, 100, 98, 96, 94, 92 and so on (here in the pattern we subtract two from each term).

Counting by 10s, 50s, and 100s

• The count of tens is simply grouping the ten numbers together to form one unit of ten. For example, the first count would be 10, followed by 20, 30, 40, and so on.

• Count of fifties is grouping the fifty numbers together to form one unit of fifty. For example, the first count would be 50, followed by 100, 150, 200, and so on.

• A count of hundreds is grouping a hundred numbers together to form one unit of a hundred. For example, the first count would be 100, followed by  200,300,400,  and so on.

• Similarly, we can count numbers in 1s, 2s, 5s, 20s, 500s, and so on.

• This method of counting has an important real-life application. Say if you have to pay Rs. x to a shopkeeper you need to divide Rs. x in different groups of 1s, 2s, 5s, 10s, 50s, 100s, and so on. ( that is in different denominations of Indian rupees)

Question 1. How many tens are there in 180?

Solution: Let’s begin by writing all 10s

10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160, 170 and 180.

By counting the above numbers we observe that eighteen tens are there in 180.

Question 2. How will you pay Rs 467 to a shopkeeper? (assuming you have only 100 rupees notes, 10 rupees notes, and one rupee coin)

Solution: We can write 467 as 400 + 60 + 7. Hence we can pay the shopkeeper using four hundred rupees notes, six-ten rupees notes, and seven one rupee coins.

Question 3. How many rupees are there in the below image?

Rupees

Solution: Above image has 

• Four hundred rupee notes, which will amount to rupees 400.

• Six ten-rupee notes, which will amount to rupees 60.

• Two one rupee coins which will amount to two rupees.

Hence total amount is Rs (400 + 60 + 2) = Rs 462 

What is a Century?

• In sports, a century is a score of 100 in a game of cricket.

• There are different types of centuries present which are mentioned in the table below:

•  A century is another name for a race of 100 yards or 100 miles.

Practice Questions

Q1. Complete the following patterns:

• 2, 5, 8, 11, 14, __, __

• 10, 20, 30, 40, 50, __, __

• 341, 343, 345,347, 349___, ___

Q2. Write the following numbers in words: 

• 103

• 456

• 78

Q3. Read the following table and answer the questions:

• A.J.K. just missed his century. How many runs did he need to make a century?

• ____ and ___ scored almost equal runs.

• ____ scored two more than a century.

Answers

Answer 1.

• 2, 5, 8, 11, 14, 17, 20

• 10, 20, 30, 40, 50, 60, 70

• 341, 343, 345, 347, 349, 351, 353

     Hint: To find patterns observe the difference between two consecutive terms.

Answer 2.

• One hundred three

• Four hundred fifty-six

• Seventy-eight

Answer 3. 

• A.J.K. scored 98 runs. He needs two more runs to score a century (100 - 98 = 2).

• K.T. and M.J. scored almost equal runs.

• S.M.  scored two more than a century.

Importance of Revision Notes for Class 3 Maths Fun with Numbers

Following the classroom sessions and taking notes at the same time will not be a necessity anymore. You can get easy explanations of the concepts of numbers from our Fun with Numbers Class 3 revision notes.

The benefits of using these revision notes are as follows.

• Proper elaboration of concepts for numbers hundred to 200. It will make it easy for you to understand the numbers coming after or before any particular number.

• You will understand how to solve problems based on numbers.

• The concepts are described in a simpler way to understand how many numbers you need to reach a target.

• You will also learn how to write numbers in words.

• The position of the digits in a number will also be explained.

In this chapter, various basic concepts related to numbers are explained. Also, the Class 3 Maths Chapter 2 Fun with Numbers revision notes will deal with three-digit numbers.

Benefits of Class 3 Maths Chapter 2 Fun with Numbers Revision Notes

The prime aim of the subject matter experts of Vedantu is to deliver the best study materials for all students. You can download the Fun with Numbers Class 3 PDF revision notes from our website to add the following benefits to your study curriculum.

• All the guidelines and parameters mandated by NCERT for Class 3 Maths are followed while making these revision notes.

• The precise presentation of the concepts in these notes will help you complete your revision before an exam easily.

• These revision notes are ideal for studying the concepts of numbers and the position of digits in three-digit numbers such as identifying how many tens in 180.

• These notes cover all topics of this chapter and can be related to the NCERT solutions for Class 3 Maths Chapter 2.

• Get a concise list of the square till 50 for your exam preparation.

• Learn how to write numbers in words and answer questions during exams perfectly.

Conclusion

Vedantu's Fun with Numbers Class 3 Notes for CBSE Maths Chapter 2 offer a valuable resource for students preparing for their mathematics exams. The free PDF download provides comprehensive and easy-to-understand explanations of the concepts covered in the chapter. With the inclusion of number words from 201 to 300 and other essential sections, these revision notes prove to be a handy tool for effective preparation and revision. Vedantu's team of experts has ensured that the content is presented in a simple language, making it accessible to young learners. Students can confidently rely on these notes to strengthen their understanding and perform better in their exams.

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