It's possible to solve some multiplication problems in your head. But sometimes it can help to use other methods instead. These include using visual aids, such as an array or place counters, or by ...

Knowledge of converting numbers into and from standard form will be useful before looking at calculations with standard index form. Back to top How to add and subtract numbers in standard form, with ...

Robert Kelly is managing director of XTS Energy LLC, and has more than three decades of experience as a business executive. He is a professor of economics and has raised more than $4.5 billion in ...