Here are the filled-in blanks:
Denominator
Numerator
Equivalent
Fraction
A. Numerator - the number on the top of a fraction that represents the number of equal-sized parts of the whole to include.
B. Fraction - the representation of a number as parts of a whole, expressed by a numerator placed over a denominator.
C. Equivalent - having the same value.
D. Denominator - the number on the bottom of a fraction that represents the number of equal-sized parts the whole is divided into.