It’s so tempting to round off numbers and present your audience with clear, whole numbers rather than cluttering up the text with decimal points and a string of digits. Sometimes rounding a number up ...

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 ...

Editor's Note: I just thought I should mention that there's an ongoing, ever-evolving, and dramatically different presentation of this topic entitled Rounding 101 on my personal website. We'll start ...

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 ...

In this post, we will show you how to round numbers in Google Sheets. Spreadsheet data often consists of decimal numbers that lie between whole numbers. A decimal number consists of a decimal point ...

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 ...

“At 7-Eleven, you’d take a penny from the tray, right? Well those are whole pennies! I’m just talking about fractions of a penny here, OK? But we do it from a much bigger tray, and we do it a couple ...