When a number is given and the number is rounded (or rounded off), then we approximate a value by eliminating the least significant digits or we can say that you are finding the closest number which is multiple of ten.
Example: - Let there are two number 52 and 385. Round off the given numbers?
Solution: - The number 52 can be rounded down into 50. (This number can be rounded to tens place),
and the number 385 can be rounded up to 400. This number can be rounded to the hundred places.
In case of whole number, whole number can be rounded to the tens place, hundreds place, thousand place and continue so on. If a number is rounded to the tens place than the final form has a zero number for the ones digit and if the number is rounded to the hundreds place than the last two values tens and ones digit is zero.
We have to apply the same procedure for the decimal number. Decimal number (also read how to divide decimals) can also be rounded; this is approximately the number which is nearest to the tenth, hundred and thousand or other given decimal place and if the decimal number is rounded to the tenth place, then the final number has no digit in the hundredths place and when a decimal number is rounded to the hundredths place then the final number has no digit in the thousandths place. Rounding makes the number very easy. Rounded numbers are only approximate number. Rounding number never give exact answer. Rounding the number gives the closest answer but it does not have exact answer.
Now we will see process of Rounding numbers:
Example: - Let there are two number 99 and 21. Change the number into rounding number?
Solution: - The number 99 can be rounded up in to 100. (This number can be rounded to hundred Place),
The number 21 can be rounded down into 20. (This number can be rounded to tens place),
In upcoming posts we will discuss about mode and How to solve mathematical Expressions. Visit our website for information on CBSE 11 physics book
Example: - Let there are two number 52 and 385. Round off the given numbers?
Solution: - The number 52 can be rounded down into 50. (This number can be rounded to tens place),
and the number 385 can be rounded up to 400. This number can be rounded to the hundred places.
In case of whole number, whole number can be rounded to the tens place, hundreds place, thousand place and continue so on. If a number is rounded to the tens place than the final form has a zero number for the ones digit and if the number is rounded to the hundreds place than the last two values tens and ones digit is zero.
We have to apply the same procedure for the decimal number. Decimal number (also read how to divide decimals) can also be rounded; this is approximately the number which is nearest to the tenth, hundred and thousand or other given decimal place and if the decimal number is rounded to the tenth place, then the final number has no digit in the hundredths place and when a decimal number is rounded to the hundredths place then the final number has no digit in the thousandths place. Rounding makes the number very easy. Rounded numbers are only approximate number. Rounding number never give exact answer. Rounding the number gives the closest answer but it does not have exact answer.
Now we will see process of Rounding numbers:
Example: - Let there are two number 99 and 21. Change the number into rounding number?
Solution: - The number 99 can be rounded up in to 100. (This number can be rounded to hundred Place),
The number 21 can be rounded down into 20. (This number can be rounded to tens place),
In upcoming posts we will discuss about mode and How to solve mathematical Expressions. Visit our website for information on CBSE 11 physics book
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