Scientific American presentsMath Dudeby Quick & Dirty Tips. Scientific American and Quick & Dirty Tips are both Macmillan companies. In the last Math Dude episode, we learned the ins and outs of ...

If so, it may be because of the reports that the United States leads the world in coronavirus cases and deaths. It's true that as of mid-June 2020 there were around 2 million cases in the U.S., ...

Use rounded values to estimate close the answer to a calculation. This is a useful non-calculator skill. Refresh your knowledge with these guides on rounding and significant figures. Rounding to ...

Scientific American presentsMath Dudeby Quick & Dirty Tips. Scientific American and Quick & Dirty Tips are both Macmillan companies. At some point in your life, you were most likely taught how to ...

Robert Breunig receives funding from the Australian Research Council, the Australian Treasury and the Australian Taxation Office. Australia’s tax system is needlessly complex, and that’s making it ...

Use place value cards to practice rounding numbers to the nearest ten and hundred. Warm up with a Mystery Math Mistake to hunt for the mistake made counting up on the number line. Use place value ...

Wading into the “muddied waters” of rounding the numbers used in a range claimed in two drug patents, the U.S. Court of Appeals for the Federal Circuit refused to set a “bright line rule.” Instead, it ...