If you’ve ever estimated how many people might attend a school event, how much candy to buy for a party, or how many miles are traveled on a road trip, ...

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 ...

Looking for a fun interactive teaching idea for rounding large numbers? Well look no further as Rounding Multi-Digit Whole Numbers Game Puzzles, for CCSS 4.NBT.3, will serve as an exciting lesson plan ...

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 ...

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 ...

In ‘Rounding Whole Numbers - KS2’ pupils practise rounding integers to the nearest 10, 100, 1,000, 10,000, 100,000 and 1,000,000. This KS2 maths teaching resource has been designed to aid delivery of ...

For statistical and mathematical purposes, OpenOffice.org's Calc spreadsheet includes a variety of ways to round off numbers. If you're a programmer, you may also be familiar with some of these ...

When you do not need to speak or write about exact quantities or measures, learning to round numbers to 10, 100 or 1,000 can be useful. It can make calculations easier and it also helps when you are ...