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Math Chap2 Vocab 6AB

Vocabulary Chapter 2

FACTOR A factor of a whole number is another whole number that divides into it without a remainder.
FACTOR PAIR A factor pair for a number is two factors whose product equals that number.
PRIME NUMBER A whole number greater than 1 that has only two factors: 1 and itself
COMPOSITE NUMBER A whole number greater than 1 that has more than two factors.
PRIME FACTORIZATION The prime factorization of a composite number shows that number written as a product of prime numbers. Ex. The prime factorization of 72 is: 2 x 2 x 2 x 3 x 3
COMMON FACTOR A factor that two or more numbers have in common. Ex. 5 is a common factor of 15, 25, 40
GREATEST COMMON FACTOR (GCF) The GCF (greatest common factor) is the biggest common factor of two or more numbers. Ex. factors of 12: 1, 2, 3, 4, 6, 12 factors of 18: 1, 2, 3, 6, 9, 18 6 is the GCF of 12 and 18
RELATIVELY PRIME Two or more numbers are relatively prime if their only common factor is 1. Ex. 8 and 15 are relatively prime because the only factor they have in common is 1. Ex. 7 and 9 are relatively prime.
FACTOR TREE A diagram used to determine the prime factorization of a composite number.
NUMERATOR A numerator is the number above the fraction bar that tells how many equal parts are chosen. Ex. in the fraction 3/4, 3 is the numerator
DENOMINATOR The denominator is the number written below the fraction bar that tells the number of parts a whole is divided into. Ex. in the fraction 3/4, 4 is the denominator
DECIMAL A number that uses a decimal point to show values less than 1, such as tenths and hundredths. Ex. 2.3, or 2/3, is two and three tenths; 1.25, or 1/25 is one and twenty-five hundredths
SIMPLEST FORM A fraction in which the numerator and denominator have no common factors except for 1.
MULTIPLE A multiple of a whole number is the product (x) of that number and another whole number. Ex. 35 is a multiple of 7 since 35 = 7 x 5
COMMON MULTIPLE A multiple that two or more numbers have in common. Ex. 24 is a common multiple of 3, 8, and 12
LEAST COMMON MULTIPLE (LCM) A LCM (least common multipe) is the smallest common multiple of two or more numbers. Ex. the LCM of 6 and 15 is 30
A number that contains a whole number and a fraction.
EQUIVALENT FRACTIONS Fractions that are equal, meaning they describe the same portion of a whole but use different numbers. Ex. 1/2 and 2/4 are equivalent fractions
LOWEST TERMS A fraction is in lowest terms if its numerator and denominator are relatively prime. Ex. 3/4 is in lowest terms because the only common factor of 3 and 4 is 1
REPEATING DECIMAL A decimal with a pattern of digits that repeat without stopping.
POSITIVE NUMBER A number that is greater than 0.
NEGATIVE NUMBER A number that is less than 0.
OPPOSITES Two numbers that are the same distance from 0. Ex. -4 and 4
ABSOLUTE VALUE The distance a number is from 0, this is always a positive number. Ex. the absolute value of -15 is 15
Created by: bigelowtafm114