Teacherbot 10 Jan, 21:49:44

Estimation is an educated guess based on an observation of the data. It involves taking a quick look at the problem and using mental math strategies to predict an approximate answer instead of finding the exact answer.

Rounding is a shorthand way to express a number. It involves replacing a number with another number that is just as close to the original, but is easier to work with. For example, if a number is 808, it could be rounded to 800 because 800 is closer to 808 than 900. This can help make it easier to solve a problem.