Download Vocabulary Lesson 1

Vocabulary Lesson 1
Proportion – An equation stating that two ratios are equivalent.
Rate – A ratio that compares two quantities of different units.
Ratio – The comparison of two quantities, the ratio of and b is a:b or a to b or a/b, where
b ≠ 0.
Similar figures – Figures that have the same shape but are different in size.
Unit rate – A comparison of two measurements in which one of the terms has a value of
one.
Denominator – The number b in a fraction a/b. If the faction is representing a part-whol
relationship, denominator is the number of equally-sized parts that make the whole or
the complete set.
Difference – A number that is the result of subtraction.
Associative Property – The way in which three or more numbers are grouped for
addition or multiplication does not change their sum or product, respectively [e.g., (5 +
6) + 9 = 5 + (6 + 9) or (2 x 3) x 8 = 2 x (3 x 8).
Fraction – A rational number expressed in the form a/b, where a is called the numerator
and b is call the denominator. A fraction may mean part of a whole, ratio of two
quantities, or may imply division.
Numerator – The number a in a fraction a/b. If the faction is representing a part – whole
relationship, then the numerator tells how many equal parts of the whole are being
considered.
Improper fraction – A fraction in which the numerator is greater than the denominator.
Mixed number – A number consisting of an integer and a proper fraction.