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Subtraction & Properties of Subtraction Video Lecture | Mathematics for Grade 4

Q: 2. What are the properties of subtraction?

Ans. The properties of subtraction are:- Commutative property: The order of the numbers does not affect the result of subtraction. For example, 7 - 3 is the same as 3 - 7.- Associative property: The grouping of numbers does not affect the result of subtraction. For example, (5 - 2) - 1 is the same as 5 - (2 - 1).- Identity property: Subtracting zero from any number leaves the number unchanged. For example, 8 - 0 is equal to 8.- Inverse property: The difference between a number and its inverse (opposite) is always zero. For example, 9 - (-9) is equal to 0.

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FAQs on Subtraction & Properties of Subtraction Video Lecture - Mathematics for Grade 4

1. What is subtraction?

Ans. Subtraction is a mathematical operation that involves taking away one quantity from another to find the difference between them. It is denoted by the minus sign (-) and is the inverse operation of addition.

2. What are the properties of subtraction?

Ans. The properties of subtraction are: - Commutative property: The order of the numbers does not affect the result of subtraction. For example, 7 - 3 is the same as 3 - 7. - Associative property: The grouping of numbers does not affect the result of subtraction. For example, (5 - 2) - 1 is the same as 5 - (2 - 1). - Identity property: Subtracting zero from any number leaves the number unchanged. For example, 8 - 0 is equal to 8. - Inverse property: The difference between a number and its inverse (opposite) is always zero. For example, 9 - (-9) is equal to 0.

3. How do you subtract large numbers?

Ans. To subtract large numbers, line up the digits according to their place value (ones place, tens place, hundreds place, etc.) and subtract each column from right to left. If necessary, borrow from the next higher place value to perform the subtraction.

4. What is the difference between subtraction and addition?

Ans. Subtraction is the operation of taking away one quantity from another to find the difference, while addition is the operation of combining two or more quantities to find the total. In subtraction, the result is always smaller than the original numbers, whereas in addition, the result is always larger.

5. How is subtraction used in real life?

Ans. Subtraction is used in various real-life situations, such as: - Calculating change: When you buy something and pay with a larger amount, subtraction is used to calculate the amount of change you should receive. - Budgeting: Subtracting expenses from income helps in managing finances and creating budgets. - Distance calculations: Subtracting the starting point from the ending point gives the distance traveled between two locations. - Timing: Subtracting the start time from the end time gives the duration of an event or activity.

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Video Description: Subtraction & Properties of Subtraction for Grade 4 2024 is part of Mathematics for Grade 4 preparation. The notes and questions for Subtraction & Properties of Subtraction have been prepared according to the Grade 4 exam syllabus. Information about Subtraction & Properties of Subtraction covers all important topics for Grade 4 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Subtraction & Properties of Subtraction.

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