Add or subtract as indicated. 18 - 2.789

Verified step by step guidance

1. Identify the operation to be performed: subtraction.
2. Align the numbers by their decimal points: 18.000 - 2.789.
3. Subtract each column starting from the rightmost digit (thousandths place) to the left.
4. If necessary, borrow from the next left column to perform the subtraction.
5. Write down the result of each column subtraction to find the final difference.

Key Concepts

Basic Arithmetic Operations

Basic arithmetic operations include addition, subtraction, multiplication, and division. In this context, subtraction is the operation being performed, where one number is taken away from another. Understanding how to execute these operations accurately is fundamental in solving mathematical problems.

Decimal Numbers

Decimal numbers are numbers that include a decimal point, representing values less than one. They are essential in precise calculations, especially in real-world applications like finance. When performing operations with decimal numbers, it is crucial to align the decimal points to ensure accuracy.

Order of Operations

The order of operations is a set of rules that dictates the sequence in which mathematical operations should be performed to ensure consistent results. While this specific problem involves only subtraction, understanding the order of operations is vital when multiple operations are present, as it affects the outcome of calculations.