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Unit 1

Unit 1 - Place Value

TermDefinition
compare numbers to consider the value of two numbers to determine which number is greater or less or if the numbers are equal in value
Counting (natural) number the set of positive numbers that begins at one and increases by increments of one each time {1, 2, 3, ..., n}
Decimal number a number in the base-10 place value system used to represent a quantity that may include part of a whole and is recorded with a decimal point separating the whole from the part
Digit any numeral from 0 – 9
Expanded form the representation of a number as a sum of place values (e.g., 985,156,789.78 as 900,000,000 + 80,000,000 + 5,000,000 + 100,000 + 50,000 + 6,000 + 700 + 80 + 9 + 0.7 + 0.08)
Expanded notation the representation of a number as a sum of place values where each term is shown as a digit(s) times its place value (e.g., 789 as (7 × 100) + (8 × 10) + (9 × 1) or 7(100) + 8(10) + 9(1)
Numeral a symbol used to name a number
Order numbers to arrange a set of numbers based on their numerical value
Period a three-digit grouping of whole numbers where each grouping is composed of a ones place, a tens place, and a hundreds place, and each grouping is separated by a comma
Place value the value of a digit as determined by its location in a number such as ones, tens, hundreds, one thousands, ten thousands, etc.
Standard form the representation of a number using digits (e.g., 985,156,789.78)
Strip diagram a linear model used to illustrate number relationships
Whole numbers the set of counting (natural) numbers and zero {0, 1, 2, 3, ..., n}
Word form the representation of a number using written words (e.g., 985,156,789 as nine hundred eighty-five million, one hundred fifty-six thousand, seven hundred eighty-nine
Created by: tgalley
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