Money and Math7 min read
How to Read Roman Numerals: Rules, Chart 1 to 100 and Examples
How to read Roman numerals in three steps, with the seven symbols, the subtraction rules, a chart from 1 to 100, years like MMXXVI and the IIII vs IV question.
Money and Math
Most everyday number problems follow a few clear formulas. These guides work through percentages, discounts, taxes, loans, interest, pay, returns, break-even, statistics and fractions step by step, and each one links to a calculator that shows the same answer to the cent.
Money and Math7 min read
How to Calculate GPA: The Formula, Real Scales and a Target Plan
How to calculate GPA with one formula: quality points divided by credits. See real school scales, weighted GPA rules and how to reach a target GPA.
Money and Math8 min read
What Grade Do I Need on My Final? The Formula and Worked Examples
What grade do I need on my final? Use one formula, see worked examples and learn what to do when the answer tops 100%, with a free grade calculator.