Over the past year, since I took over the common-core math beat, I’ve been thinking a lot about fractions. As I wrote in November, the Common Core State Standards for mathematics emphasize fractions ...

Fractions are a foundational concept in mathematics, essential for understanding parts of a whole. Fractions help learn ratios, percentages, and algebra better. Dividing pizza is a practical example ...

Excel percentage formulas can get you through problems large and small every day—from determining sales tax (and tips) to calculating increases and decreases. We’ll walk through several examples below ...