Numbers that look nice in our mind room numbers the usually finish with a zero such as 10, 30, 200.Therefore, once rounding numbers, that usually method that you space going to shot to put zero(s) at the end. Numbers have the right to be rounded to the nearest ten, hundred, thousand, ten-thousand, etc... Rounded numbers are just approximates; they never ever give exact answers.

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Study the two examples in the figure listed below carefully and also then keep analysis in order to gain a depths understanding.


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Rounding whole numbers come the nearest ten

when rounding to the nearest ten, if the critical digit ends through 1, 2, 3, or 4, ring to the next number that is smaller than the number given and ending through a zero.For instance, ring 43 come the nearest ten.The critical digit is 3, therefore the next number smaller sized than 43 with an ending of zero is 40.On the various other hand, If the critical digit is 5, 6, 7, 8, or 9, ring to the following number bigger 보다 the provided number and also ending with zero.For instance, ring 45 to the nearest ten. The critical digit is 5, so the following number bigger than 45 and ending with zero is 50.Other examplesRound 23, 36, 55, and 99.For 23, the last digit is 3, for this reason the prize is 20.For 36, the last digit is 6, for this reason the price is 40.For 55, the critical digit is 5, so the prize is 60.For 99, the critical digit is 9, so the answer is 100.

Rounding come the nearest hundred

When rounding to the nearest hundred, you will should look in ~ the last 2 digits. If the last 2 digits is 49 or much less round come the next number the is smaller than the number given and also ending with two zeros.For instance, ring 549 to the nearest hundred.The last 2 digits is 49, therefore the following number smaller sized than 549 v an ending of two zeros is 500.On the other hand, If the last 2 digits is 50 or more, ring to the following number bigger 보다 the provided number and ending through two zeros.For instance, ring 865 come the nearest hundred. The last two digits is 65 and 65 is bigger 보다 50, so the next number bigger than 865 and also ending through two zeros is 900.Other examples
Round 648, 121, 950, and 351. For 648, the last 2 digits is 48, therefore the prize is 600.For 121, the last 2 digits is 21, for this reason the prize is 100.For 950, the last 2 digits is 50, therefore the answer is 1000.For 351, the last 2 digits is 51, therefore the price is 400.

Rounding totality numbers to the nearest thousand

When rounding to the nearest thousand, friend will have to look at the last 3 digits. If the last 3 digits is 449 or less round come the following number the is smaller than the number given and also ending with 3 zeros.For instance, round 2437 to the nearest hundred.The last three digits is 437, for this reason the next number smaller than 2437 through an finishing of 3 zeros is 2000.On the other hand, If the last three digits is 500 or more, round to the following number bigger 보다 the given number and ending with three zeros.For instance, round 7500 come the nearest thousand. The last 3 digits is 500, for this reason the next number bigger 보다 7500 and ending with 3 zeros is 8000.Other examples
Round 1648, 1121, 3950, and also 9351For 1648, the last 3 digits is 648, therefore the answer is 2000.For 1121, the last three digits is 121, for this reason the prize is 1000.For 3950, the last 3 digits is 950, for this reason the answer is 4000.For 9351, the last 3 digits is 351, so the price is 9000.

When rounding totality numbers come a number smaller sized than the provided number, we can also say the we room rounding down.

When rounding totality numbers to a number bigger 보다 the provided number, us can additionally say the we are rounding up.

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Rounding entirety numbers to the nearest ten-thousand
If the critical 4 digits is bigger than 5000, ring up. Otherwise, ring down. Round off to the nearest hundred-thousandIf the critical 5 digits is bigger 보다 50000, ring up. Otherwise, ring down. Rounding to the nearest millionIf the critical 6 digits is bigger than 500000, round up. Otherwise, round down.

Rounding whole numbers quiz


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