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, ...

Leave the digit the same if the next digit is less than 5 (this is called rounding down) but increase it by 1 if the next digit is 5 or more (this is called rounding up). The rounded value must be a ...

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 ...

I learned something surprising this weekend. A rule I was taught back in elementary school turned out not always to be true. In the process, I discovered something worrisome about myself and how we ...

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 ...

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 ...