Place Valuewhole number counting with decimals Digit by Digit Decimal Place ValueFirst ExampleDecimal place value says
where the plus sign + may be read as the word and. The recognition of place value from right to left means the place value of the leading digit is found last rather than first. We might read
So the right to left direction in which place value is found
is opposite to the left to right direction in which the number is read aloud in word form. Second ExampleThe significance or value of the the digits in the larger whole number represented by the decimal 23,456,778 is given from right to left by 8 ones, 7 tens, 7 hundreds, 6 thousands, 5 ten thousands, 4 one hundred thousands, 3 millions, 2 ten millions, and read from left to right as
Each column in a decimal representation of a whole number, except for the last, has a place value ten times greater than the following column Groups of Three Place ValueSecond Example Revisited
We may also read 23,456,778 backward as
and forward as
Third ExampleFor longer numbers, we find place value from right to left 96 456 899
138 443 704 789 123
Hence from left to right, 96 456 899 138 443 704 789 123 is 96 sextillions, 456 quintillions, 899 quadrillions, Each group of three (or less) in a decimal representation of a whole number, except for the last group of three, has a place value a thousand times greater than the following column Reading numbers aloud from right to left and then left to right in groups of three could provide two to four hilarious exercises in primary or secondary school mathematics class. Fourth Example:Avogrado's Number N = 6.02 * 1023 = 602 000 000 000 000 000 000 000
To come: UK version of above exercise
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Number TheoryA. Start of Number Theory B. Number Theory Related Site Folders
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