Associative Property of Addition
the property that states when the grouping of addends is changed, the sum is the same
benchmark
a familiar number used as a point of reference
common denominator
a common multiple of two or more denominators
Commutative Property of Addition
the property that states that when the order of two addends is changed, the sum is the same
equivalent fractions
fractions that name the same amount or part
numerator
the top number of a fraction
denominator
the bottom number of a fraction