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14 Cards in this Set

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  • Back
Ordinal Number
Numbers used to tell the order of people or objects. (p.4)
Ex.: first, second, third, fourth ...
DIGIT
The symbols 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 used to write all numbers. (p.6)
PLACE VALUE
The value given to the place a digit has in a number. (p.6)
Ex.: In 3,567, the place value of the digit 5 is hundreds.
Expanded Form
A number written as the sum of the values of its digits. (p.6)
Ex.: 2, 367 = 2,000 + 300 + 60 + 7
Standard Form
A way to write a number showing only its digits. (p.6)
Ex.: 2,367
Word Form
A number written in words. (p.6)

Ex.: 584 = five hundred eighty-four
PERIOD
A group of three digits in a nu;mber, separated by a comma. Group from right to left.

Ex.: 65,743
COMPARE
To decide if one number is greater than or less than another number. (p.18)
ORDER
To arrange numbers from least to greatest or from greatest to least. (p.22)
Even Number
A whole number that has 0, 2, 4, 6, or 8in the ones place. (p.24)
Odd Number
A whole number that has 1, 3, 5, 7, or 9 in the ones place. (p.24)
Rounding
Replacing a number with a number that tells about how much or how many to the nearest ten, hundred, thousand, and so on. (p.28)
Decimal Point
A dot used to separate dollars from cents and ones from tenths in a number. (pp. 36, 564)
Dollar Sign
A symbol used to indicate money. (p.36) $