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### 10 Cards in this Set

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 Expressing a number to the nearest ten, hundred, thousand and so on. 5,365 rounds to 5,000 Rounding An approximate rather that exact number. An educated guess. Estimate A number written as words. four million, two hundred thirty seven thousand, five hundred eighty three. Word form A number written as the sum of the values of its digits. 4,000+500+20+5=4,525 Expanded form A number written with commas separating groups of three digits. 421,523,638 Standard form A group of three digits separated from other digits of a number by a comma Period A number written with words naming the periods. 4 million, 335 thousand,894 Short word form Any of the ten symbols 0,1,2,3,4,5,6,7,8,or 9. Digits A number greater than zero. Positive number A number less than zero. Negative Number