What is 30 minus 18?

To find the result of 30 minus 18, you start with the number 30 and subtract 18 from it. This can be calculated in a straightforward way:

30 - 18 = 12.

When performing the subtraction, you can visualize it by breaking down the numbers. You can think of 30 as being made up of 18 and an additional 12. Since you are taking away 18, what remains is exactly 12. This means the answer to the question is indeed 12.

Understanding subtraction as removing a quantity from a larger quantity helps clarify why the answer is 12. It is essential to grasp this concept, as it is a foundational mathematical operation frequently used in various contexts.