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Grade 9 Number Strand Vocabulary

Vocabulary to match grade 9 math (Western Canadian Protocol)

AB
averagethe sum of the values, divided by the number of values
basethe number that is multiplied repeatedly
coefficienta numeral or constant multiplier of the variable(s) in a term
cubeda number multiplied by itself three times
denominatorthe bottom number of a fraction
digitone of the ten symbols {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} by which all numbers can be written
equationa statement that shows two expressions having the same value
eqivalentequal in value
expanded form (notation)a whole number or decimal number showing the place value for each digit
exponentthe number of times the base is to be multiplied by itself
expressioncollection of symbols for variables and operations
factornumbers used in multiplication
formulaan equation giving the relationship between two or more quantities
fractionpart of a whole
greatest common factor (GCF)the largest number that is a factor of every number in a set
improper fractionwhen the numerater is greater that the denominator
infinitehaving no boundary or limit
integerone of the numbers ...-3, -2, -1, 0, +1, +2, +3,...
least common multiple (LCM)the smallest multiple shared by the denominators
mixed numbera number expressed as the sum of an integer and a proper fraction
natural numberis one of the numbers in the sequence 1, 2, 3, 4, 5, 6,...
negativeone of the numbers ...,-3, -2, -1
numeratorthe top number in a fraction
per centout of 100
perfect squarea number that can be expressed as the product of two equal numbers
place valuein the decimal number system ,the value of a digit depends on where it is placed in a string of digits
positiveone of the numbers +1,+2,+3,...
poweris a short way to write an expression where the same factor is multiplied repeatedly
power of tenthe number of times 10 is multiplied by itself
proper fractiona fraction that, while ignoring any negatives signs, has a smaller numerator than denominator
rateone quantity measured in relation to another quantity
rational numbera number that can be expressed as a ratio of two integers (but the denominator cannot be zero)
ratioa number or quantity compared to another
repeating decimala decimal number that contains a finite set of digits that repeat
scientific notationproduct of a number greater than 1 but less than 10 and a power of 10
simplest termsthe numerater and denominator must have no common factor (other than 1)
standard form (notation)a system of writing numbers using base of 10
terminating decimala decimal number that contains a finite number of decimal digits
variablea symbol used to represent a quantity
whole numberis one of the numbers in the sequence 0, 1, 2, 3, 4, 5, 6,...


Mr. Reed

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