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C2_Chapter 4

Chapter 4 Vocabulary

Bar Notation In repeating decimals, the line or bar placed over the digits that repeat. For example, 2.63 indicates that the digits 63 repeat.
Common Denominator A common multiple of the denominators of two or more fractions. 24 is a common denominator for 1/3, 5/8 and 3/4 because 24 is the LCM of 3, 8, and 4.
Composite Number A whole number greater than 1 that has more than two factors.
Equivalent Fractions Fractions that have the same value. 2/3 and 4/6 are equivalent fractions.
Factor Tree A diagram showing the prime factorization of a number. The factors branch out from the previous factors until all of the factors are prime numbers.
Greatest Common Factor The greatest of the common factors of two or more numbers. The GCF of 18 and 24 is 6.
Least Common Denominator The least common multiple of the denominators of two or more fractions.
Least Common Multiple The least of the common multiples of two or more numbers. The LCM of 2 and 3 is 6.
Multiple The product of a number and any whole number.
Percent A ratio that compares a number to 100.
Prime Factorization Expressing a composite number as a product of prime numbers. For example, the prime factorization of 63 is 3 × 3 × 7.
Prime Number A whole number greater than 1 that has exactly two factors, 1 and itself.
Ratio A comparison of two numbers by division. The ratio of 2 to 3 can be written as 2 out of 3, 2 to 3, 2:3, or 2/3
Rational Numbers A number that can be expressed as a fraction.
Repeating Decimals A decimal whose digits repeat in groups of one or more. Examples are 0.181818... and 0.83333... .
Simplest Form A fraction is in simplest form when the GCF of the numerator and the denominator is 1.
Terminating Decimal A decimal whose digits end. Every terminating decimal can be written as a fraction with a denominator of 10, 100, 1,000, and so on.
Venn Diagram A diagram that uses overlapping circles to show how elements among sets of numbers or objects are related.
Created by: Mrs_Irish