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What is tens and ones? Video Lecture - Class 2

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1. What is the concept of tens and ones in Class 2 mathematics?

Ans. The concept of tens and ones in Class 2 mathematics refers to the place value system used to represent numbers. In this system, the digits in a number are divided into two categories: the tens and the ones. The tens digit represents the number of tens in a number, while the ones digit represents the number of ones. For example, in the number 25, the digit 2 represents two tens, and the digit 5 represents five ones.

2. How do you read and write numbers using tens and ones?

Ans. To read and write numbers using tens and ones, you need to understand the place value system. Start by identifying the digit in the tens place, which represents the number of tens. Then identify the digit in the ones place, which represents the number of ones. For example, to read the number 35, you would say "thirty-five" as there are three tens and five ones. To write the number 43, you would write the digit 4 in the tens place and the digit 3 in the ones place.

3. How can I visualize the concept of tens and ones to help me understand better?

Ans. Visualizing the concept of tens and ones can be helpful in understanding it better. You can use objects like base-ten blocks or drawings to represent tens and ones. For example, you can represent a group of ten objects as a block or a stick, and individual objects as dots or circles. By counting the number of sticks and dots, you can understand the value of each digit in a number. This visual representation can make it easier to grasp the concept of tens and ones.

4. What are some examples of numbers using tens and ones?

Ans. Examples of numbers using tens and ones include 23, 58, and 76. In the number 23, the digit 2 represents two tens, and the digit 3 represents three ones. Similarly, in the number 58, the digit 5 represents five tens, and the digit 8 represents eight ones. In the number 76, the digit 7 represents seven tens, and the digit 6 represents six ones. These examples showcase the use of tens and ones in representing numbers.

5. How does understanding tens and ones help in solving addition and subtraction problems?

Ans. Understanding tens and ones is crucial in solving addition and subtraction problems. It helps in regrouping or carrying over numbers when adding or subtracting. For example, when adding 9 and 7, understanding tens and ones allows us to regroup the ones digit and carry over a value of 1 to the tens place. Similarly, when subtracting 16 from 32, understanding tens and ones helps us borrow from the tens place and adjust the ones place accordingly. By applying the concept of tens and ones, addition and subtraction problems become more manageable.

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