Let's look at the rule for multiplying decimal numbers by 10. To multiply a decimal by 10, move the digits one place to the left. For example, let's multiply 3.95 by 10. 3.95 × 10 ...

Many students find math challenging, especially when dealing with fractions, decimals, and percentages. Mastering the conversion between these forms simplifies calculations and enhances understanding.

The common denominator model, while not really a picture, demonstrates that the same rules apply to multiplication and division with fractions. It also shows why “invert and multiply” works.

Excel percentage formulas can help with many everyday applications. We'll walk through several examples, including turning fractions to percentages, and calculating percentage of total, increase ...