Question

k about the relationship between the numerator and denominator. complete the equation.
4 = 20

s a factor of 20.

w, look for an equivalent unit fraction. which unit fraction has a denominator that is 4 times the numera

5/20 = 1/4

idea
how do i know if a fraction is equivalent to a unit fraction is
is not
a fraction is equivalent to a unit fraction if the numerator ? a factor of the denominator.

Explanation:

Step1: Recall unit fraction concept

A unit fraction has numerator 1. For a fraction to be equivalent to a unit fraction, the numerator must divide the denominator (i.e., numerator is a factor of denominator). For example, $\frac{5}{20}=\frac{1}{4}$ (5 is factor of 20, simplifies to unit fraction $\frac{1}{4}$).

Step2: Apply to the question

The sentence is "A fraction is equivalent to a unit fraction if the numerator \_\_\_ a factor of the denominator." From the example and concept, numerator must be a factor (like 4 is factor of 20, 5 is factor of 20 in the examples). So the correct word is "is".

Answer:

is