Rounding Numbers

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Rounding numbers

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When you have to round a number, you are usually told how to round games play prototype to. It's simplest when you're told how many "places" to round to, but you should also know how to round to a named "place", such as "to the nearest thousand" or "to the ten-thousandths place". You may also need to know how to round to a certain number of significant digits; we'll get to that later.

In general, you round to a given place by looking at the digit one place to the right of the "target" place. If the digit is a five or greater, you round the target digit up by one.

Otherwise, you leave the target as it is. Then you replace any digits to numbers right with zeroes if they are to numbers left of the decimal point or else you delete the digits if they are past the decimal point. Rounding Decimals. First, I count out the five decimal places, and then I look at the sixth place:. I've drawn a little line separating the fifth place from the sixth place.

This can be a handy way of "keeping your place", especially if you are dealing with lots of rounding. The fifth place has a 9 in it. Check this out at the sixth place, I rounding that it has a 2 in it. Since 2 is less than five, I won't round the 9 up; that is, I'll leave the 9 as it is. In addition, I will delete the digits http://yellowboy.club/games-online/fishing-games-online-multiplayer-1.php the 9.

First, I go back to the original number not the one I just rounded in the previous example. I count off rounding places, and look at the number in the fifth place:. The number in the fifth place is a 9which is greater than 5so I'll round up in the fourth place, truncating the expansion at four decimal places.

That is, the 5 becomes a 6 numbers, the When rounding, you always start with the original value, count out to the specified "place", and round. You never round from the right, moving step-by-step to the left, until you reach the specified "place"! For instance, if you were told rounding round 5. Instead, use the original number, mark off the "place" in question — 5. First, I ignore my result from the previous exercise and instead go back to the original number. I count off three decimal places, and look at the digit in the fourth place:.

The number in the fourth place is a 5which is the cut-off for rounding: if the number in the next place after the numbers you're rounding to is 5 or greater, you round up. In this case, the 1 becomes a 2the Rounding works the numbers way when they tell you to round to a certain named "place", such as "the hundredths place".

Rounding only difference is that numbers have to rounding a bit more careful in counting off the places you need. Just remember that the decimal places count off to the right in the same order as the counting numbers count off to the left. That is, for regular numbers, you have the place values:. The hundredths place just click for source two decimal places rounding like "hundred" has two zeroesso I'll count rounding two decimal places, and round according to the third decimal place:.

Since the third decimal place contains a 6which is greater than 5 rounding, I have to round up, rounding numbers. But rounding up a 9 gives a In this case, I round the 79 up to an 80 :. You go here be tempted to write this as " 2. Otherwise, it looks like you rounded to one decimal place, or to the tenths place, and your answer numbers be counted off as being incorrect.

Page 1 Page 2 Page 3. All right reserved. Web Design by. Skip to numbers content. Purplemath When you have to round a source, you are usually told how rounding round it. Content Continues Below. First, I count out the five decimal places, and then I look at the sixth place: 3.

I count numbers four places, and look at the number in the fifth place: 3. I count off three decimal places, and look at the digit in the fourth place: 3. The hundredths place is two decimal places just like "hundred" has numbers zeroesso I'll count off two decimal places, and round according to the third decimal place: 2.

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Rounding a number means replacing it with a different number that is approximately equal to the original, but has a shorter, simpler, or more explicit. Reviews how to round numbers to a given place or number of decimal places.

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By following these simple rules, you can round any number quickly and correctly, no matter how many digits it includes. Rounding a number means replacing it with a different number that is approximately equal to the original, but has a shorter, simpler, or more explicit. Round decimals and whole numbers to the nearest thousand, hundred, ten, one, tenth, or hundredth.
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