Rounding helps us to quickly estimate answers before working them out. Always look at the digit to the right of the one you’re supposed to be rounding to. For example, to round the number 1,121,565 to ...

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 ...

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 ...

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 ...

Among high school students and adults, girls and women are much more likely to use traditional, step-by-step algorithms to ...