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# Vocabulary Math 1-24

### The math vocabulary words we were given to study for the second week.

Standard Notation Just the number as we normally write it.
Expanded Notation Writing a number to show the value of each digit.It is shown as a sum of each digit multiplied by its matching place value (units, tens, hundreds, etc.)
Exponential Notation A shorthand way of representing repeated multiplication of the same factor.
Scientific Notation Where a number is written in two parts:First: just the digits (with the decimal point placed after the first digit),Followed by: ×10 to a power that would put the decimal point back where it should be.
Prime Factorization A number, expressed as a product of prime factors. For example, of 24 is 2 x 2 x 2 x 3.
Decimal A fraction that has a denominator of a power of ten, the power depending on or deciding the decimal place.
Whole Numbers The numbers {0, 1, 2, 3,…} There is no fractional or decimal part and no negatives.
Integer A number with no fractional part. For example, -2, -1, 0, 1, 2
Positive Number Numbers greater than 0 that can be written as a fraction or a terminating or repeating decimal.
Negative Number A number less than 0; a number to the left of zero on the horizontal number line.
Array A rectangular arrangement of objects in rows and columns.
Equivalent Equal in value but in different forms.
Greatest Common Factor (GCF) (GCF) The highest number that divides exactly into two or more numbers.
Least Common Multiple (LCM) The smallest number that is a multiple of two or more numbers.
Multiple The result of multiplying by a whole number. For example 20 is a multiple of 4 and 5.
Exponent A symbol or number placed above and after another symbol or number to denote the power to which the latter is to be raised.
Prime Number This can be divided evenly only by 1 or itself. It must be greater than 1.
Composite Number This can be divided evenly by numbers other than 1 or itself. It has more than 1 factor pair.
Factors The numbers you multiply together to get another number. For example: 3 and 4 are factors of 12 because 3x4=12
Estimate A calculation of a close, rather than exact, answer; a “ballpark” answer; a number close to another number.
Front-End Estimation Estimating to the highest place value. Ex. 7,438= 7,000
Compatible Numbers These are numbers close in value to the actual numbers and easy to add, subtract, multiply, or divide mentally.
Round This means reducing the digits in a number while trying to keep it's value similar.
Absolute Value The absolute value of a positive number is the number itself.
Created by: awesomeasian3