Rounding numbers

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),

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Associative property of multiplication

Associative property of multiplication (more detail here) is define that without changing the multiplication appends can be group in any way. According to the Associative property, which comes when doing algebra equation solver, if p * (q * r) then it can be group as
( p * q) * r and there is no change in result .It can describe through an example as follows :
6 * (4 * 5) = (6 * 4) * 5 that is equal to 120 in either form. Associative property of multiplication can take three or more variables or values in expression regardless how they are grouped. You can also play associative property worksheets to improve skills. In the expression there is no change in the answer if parenthesis shows the terms that are considered as single unit .Parenthesis shows the grouping of the values means how the numbers are associated together. Associative property of the multiplication is the most basic property of the computations and it should be remember that grouping in the parenthesis are solve first .This property is the basic number property that is describe the rearrangement of the values .There are some examples of Associative property of multiplication as follows :
Suppose one person go to the super market and purchase milk of 10 dollars and buys the 3 packets of it and sometime after buys 2 packets more and two day after buys 3 packets more, how much money one's give to the cashier? The above situation is associative as
Solution: So he buys the packets as 10 * (3 + 2 + 3) = (3 + 2 + 3) * 10
Both the terms are equal means the answer 80 for each of the expression.
So according to the associative property of multiplication expression can be grouped as any how there is no effect on the answer.


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