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Topic 1 Numeration
Numeration
Term | Definition |
---|---|
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. |