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 ...

Students distinguish between accuracy and precision of measurements. Accuracy, Precision, and Significant Digits: Students distinguish between accuracy and precision of measurements and make ...

Making measurements in physics has restrictions on the accuracy that is possible. Also, sometimes it is more useful to restrict the amount of detail stated in a measurement. The NASA website actually ...