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# Topic 1 Numeration

### Numeration

TermDefinition
digits the symbols 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9
place value tells you the value of each digit in a number according to its position in the number used to write numbers Example: In 150, the place value of the digit 1 is hundreds
standard form a number written in a way that shows only its digits Example: 385
expanded form A number written as the sum of the values of its digits. Example: 2,476 = 2,000 + 400 + 70 + 6
word form A number written in words. Example: 125 = one hundred twenty-five
period A group of 3 digits in a number, separated by commas, starting from the right.
compare To find out which number is greater and which number is less. Example: 7 is greater than 5 and 5 is less than 7.
order To write numbers from greatest to least or form least to greatest. Example: Order, 9, 2, and 3 from least to greatest: 2, 3 9.