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Converting percentages to decimals is a basic and essential skill in math that allows us to work with different expressions and types of data more effectively. Think of percentages as a way to express a fraction where the denominator is always 100. For example, saying '50 percent' is the same as saying '50 out of 100', or simply half.

To convert a percentage to a decimal, we perform a straightforward operation: dividing by 100. This is because the word 'percent' originates from the Latin 'per centum', which means 'by the hundred'. Therefore, when you see a percentage like 2.97%, what it really means is 2.97 per 100.

As per the step-by-step solution presented, the conversion of 2.97% to a decimal involves simply moving the decimal point two places to the left, which is the numerical equivalent of dividing by 100. So, 2.97% becomes 0.0297 in decimal form.

Understanding mathematical operations is the cornerstone of handling numbers and equations in many fields. Dividing by 100, as used in percentage to decimal conversion, is one example of such operations. Fundamentally, there are four basic mathematical operations: addition, subtraction, multiplication, and division.

Each operation serves a different purpose and is symbolized by its own operator (plus +, minus -, multiply \times, divide \text{\raisebox{1.5pt}{\(\big/\)}}). These operations are used daily, from simple calculations like balancing a checkbook to complex equations in engineering and physics.

When you're dividing a number by 100, you're essentially scaling it down, making it a hundred times smaller. This concept applies broadly, from financial calculations to measurements in science. It's vital to be precise and methodical when executing mathematical operations to prevent errors and to ensure accurate results.

Decimal notation is a way of expressing numbers that includes a decimal point to represent fractions of a whole. This system is based on the number 10, known as the base-10 or decimal system. In this notation, the position of each digit represents its value in powers of 10.

The digits to the left of the decimal point represent whole numbers, while those to the right represent parts of the whole. As we move from left to right, each digit holds a place value that is a power of 10 less than the previous one. For example, in the decimal 0.0297, the 2 is in the hundredths place, 9 is in the thousandths place, and 7 is in the ten-thousandths place.

Understanding decimal notation is critical not only for converting percentages but also for measuring, calculating money, and working with units in scientific contexts. It's a universal method that allows clear and precise representation of numbers, both large and small.