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 ...

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 ...

Learning to assess the reasonableness of an answer is an important mathematical skill. Learning to assess the reasonableness of an answer is an important mathematical skill. It’s your child’s way of ...

Imagine needing to estimate the total cost of the items in your grocery basket to decide whether to put something back. So you round to the nearest dollar for each potential purchase, using the “round ...

The ROUNDDOWN function is a Math and Trigonometry function in Microsoft Excel, and its purpose is to round a number down towards zero. The formula for the ROUNDDOWN function is ROUNDDOWN(number, ...

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 ...