Samacheer Kalvi Class 4 Maths Solutions Term 1 Chapter 2 Numbers Exercise 2.2

Question 1. Circle the odd numbers in the following. 9001, 8002, 7603, 6542, 4875, 3882, 3217.
Answer: Odd numbers are those that cannot be divided evenly by 2, and their last digit is always 1, 3, 5, 7, or 9. From the given list, the odd numbers are 9001, 7603, 4875, and 3217. Understanding odd and even numbers is a basic building block for more complex number theory.
In simple words: The odd numbers in the list are 9001, 7603, 4875, and 3217, because their last digit is an odd number.

🎯 Exam Tip: To quickly identify odd or even numbers, always focus only on the last digit of the number.

Question 2. Circle the even numbers in the following. 6231,5920, 4812, 2121, 1234, 9528, 3946.
Answer: Even numbers are those that can be divided evenly by 2, and their last digit is always 0, 2, 4, 6, or 8. From the given list, the even numbers are 5920, 4812, 1234, 9528, and 3946. Even numbers are always divisible by two without any remainder.
In simple words: The even numbers in the list are 5920, 4812, 1234, 9528, and 3946, as their last digit is an even number.

🎯 Exam Tip: You can determine if a number is even or odd by just looking at its last digit, not the whole number.

Question 3. Choose the even numbers from the following and write the number and number names.
a. 6501
b. 4706
c. 3999
d. 4001
e. 3848
Answer: We need to pick out the even numbers from the list and write their names. An even number has its last digit as 0, 2, 4, 6, or 8. Writing numbers in words helps to reinforce their place value.

🎯 Exam Tip: When writing number names, carefully spell out each part and remember to use hyphens for numbers between twenty-one and ninety-nine (e.g., forty-eight).

Question 4. Pick out the even numbers and write their name in the table given below,
a. 4703
b. 3206
c. 2003
d. 4017
e. 2001
Answer: We need to find the even numbers from the provided list. An even number is any whole number that can be divided by 2 without a remainder, meaning its last digit is 0, 2, 4, 6, or 8. Practice converting numbers to words and vice-versa for better comprehension.

🎯 Exam Tip: Always double-check the last digit for even numbers and ensure the spelling for number names is accurate to avoid losing marks.