The number one billion is written as 1,000,000,000 in standard or numeric form. It is regarded as 1 x 10 to the ninth power in scientific notation, where the numeral 9 indicates the number of zeros. It is equivalent to a thousand million: 1,000 x 1,000,000.
A billion used to be written as 1,000,000,000,000 in British English because it was defined as a million million: 1,000,000 x 1,000,000. British English has adopted the American figure of 1,000,000,000 to denote a billion, according to Oxford Dictionaries. The nine zeros in a billion correspond to 9 place values: ones, tens, hundreds, thousands, ten thousands, hundred thousands, millions, ten millions and hundred millions.
Learn MoreThe history of whole numbers is as old as the concept of counting itself, but the first written whole numbers appeared between 3100 and 3400 B.C. Prior to that time, whole numbers were written as tally marks, and there are records of tally marks denoting whole numbers that date back to 30,000 B.C.
Full Answer >The number pi represents the ratio of a circle's circumference to its diameter. The ratio never changes for any circle. It is approximately valued at 3.14, but its decimal places have been figured to more than a trillion digits as of 2014.
Full Answer >The Roman numeral equivalent of 1996 is MCMXCVI. The basic Roman numeral units are as follows: I equals 1, V equals 5, X equals 10, L equals 50, C equals 100, D equals 500 and M equals 1000.
Full Answer >The factors of the number 91 are 1, 7, 13 and 91. The factors of a number are obtained by dividing that number by other numbers. If a number is less than or equal to 91 and divides 91 exactly without leaving a remainder, it is a factor of 91.
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