Which phrase should be inserted on the line to correctly compare the two fractions? use the models to .

The last answer, "is equal to".

Make like denominators and compare the fractions.

16/20 is one fraction so make the other fraction have 20 as the denominator also.  To do that multiply 5 by 4 to get 20.  To keep everything even multiply the top number of 4 by 4 also getting 16.

So 16/20 and 16/20 are both fractions having the denominators the same.  Therefore these fractions are equal to each other.