When do i round up a number

And if it is followed by 0, 1, 2, 3, 4 round the number down. Rounding decimals to two decimal places is the same as rounding to the nearest hundredth.

To round a number to the nearest hundredth, look at the digit at the right of the hundredth place and apply the same rule : if the digit in the thousandth place is 0, 1, 2, 3, 4, you will round down to the nearest hundredth or just remove all digits found at the right.

But, if the digit in the thousandth place is 5, 6, 7, 8, 9, you have to round up to the nearest hundredth, and then remove all the digits on the right.

Rounding decimals to four decimal places refers to rounding to the nearest ten thousandth. Updated September 01, Featured Video. Cite this Article Format. Russell, Deb. Simple Rules for Rounding Numbers Correctly. A Lesson Plan to Teach Rounding by 10s.

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At any time, you can update your settings through the "EU Privacy" link at the bottom of any page. These choices will be signaled globally to our partners and will not affect browsing data. We and our partners process data to: Actively scan device characteristics for identification. The units digit can be ignored when rounding a three-digit number to the nearest So would be rounded down to , would be rounded up to and would be rounded up to Rounding numbers to the nearest In Year 4 , children need to round four-digit numbers to the nearest ten, hundred or thousand.

Example questions may be as follows: What is rounded to the nearest ten? Answer: What is rounded to the nearest hundred? Answer: What is rounded to the nearest thousand? Answer: Children are also expected to use their knowledge of rounding to estimate answers to calculations when checking their work.

For example: imagine a child has worked out 38 x 42 and got the answer Although, is an approximate answer, it is completely different to which means they would know that they had done something wrong in their initial calculating.

Rounding decimal numbers Children also need to round decimals in Years 4, 5 and 6. In Year 4 , they will be introduced to rounding decimals with one decimal place to the nearest whole number. In Year 5 they will move onto rounding decimals with two decimal places to the nearest whole number and to one decimal place. They may come across questions such as these: What is 3. Look at the first number after the decimal point - 9.

Because it is more than 5 you round the 3 to the left of it up to 4.