The result of dividing 21 by 7 is a straightforward mathematical operation that yields a precise answer. In mathematics, division is an operation that represents the process of sharing or grouping a certain quantity into equal parts. When we divide 21 by 7, we are essentially asking how many groups of 7 can be made from 21.
Mathematical Operation
To find the result of 21 divided by 7, we perform the division operation: 21 รท 7. This operation can be visualized as sharing 21 identical items into groups of 7 items each. The result of this operation tells us how many complete groups of 7 items we can make from the 21 items.
Calculation
The calculation for dividing 21 by 7 is as follows:
| Dividend | Divisor | Quotient |
|---|---|---|
| 21 | 7 | 3 |
This calculation demonstrates that 21 divided by 7 equals 3, because 7 multiplied by 3 equals 21. There is no remainder, indicating that the division is exact and that all items are perfectly divided into the specified groups without any leftovers.
Key Points
- The division of 21 by 7 results in a quotient of 3.
- This operation represents grouping 21 items into groups of 7.
- The result is an exact division without any remainder.
- The calculation demonstrates a fundamental principle of arithmetic division.
- Understanding this operation is crucial for more complex mathematical problems involving division.
Practical Application
Dividing numbers is a fundamental skill with numerous practical applications in everyday life, science, and commerce. For instance, if you have 21 apples and want to distribute them evenly among 7 friends, dividing 21 by 7 tells you that each friend can receive 3 apples. This simple operation is the basis for more complex calculations and problem-solving in fields like economics, physics, and engineering.
Real-World Example
Consider a scenario where a bakery has 21 cakes and wants to package them in boxes that hold 7 cakes each. To find out how many boxes are needed, the bakery would divide 21 (the total number of cakes) by 7 (the number of cakes per box), resulting in 3 boxes. This example illustrates how division helps in solving real-world problems related to distribution, packaging, and allocation of resources.
In conclusion, the result of dividing 21 by 7 is a clear example of how mathematical operations can be applied to solve problems and understand quantities. The precise answer, which is 3, demonstrates the importance of division in various aspects of life and learning.
What is the result of dividing 21 by 7?
+The result of dividing 21 by 7 is 3, because 7 times 3 equals 21 exactly.
Why is dividing numbers important?
+Dividing numbers is important because it helps in solving problems related to sharing, grouping, and distribution of quantities in various aspects of life, including commerce, science, and everyday activities.
Can division be used for problem-solving in real-world scenarios?
+Yes, division is a fundamental operation used in solving real-world problems, such as determining the number of groups that can be made from a certain quantity, calculating the cost per unit of an item when buying in bulk, and allocating resources among different tasks or projects.
