Chemistry Math Review Video: Rounding Numbers - 1 Minute Lesson

This video discusses how round numbers properly. Rounding a number is an easy yet very important skill. Indeed, after performing any data manipulation in science you are likely going to have to round the answer your calculator gives you. Here are the rules:

If the number you are rounding is followed by 5, 6, 7, 8, or 9, round the number up. For example, 129 would could round to 130 if you wanted two (2) significant figures.
If the number you are rounding is followed by 0, 1, 2, 3, or 4, round the number down. For example, 234 would round to 230 if you wanted two (2) significant figures.
Good Luck and Good Chemistry!

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