A rectangular prism with a volume of

5

55 cubic units is filled with cubes with side lengths of

1/3

start fraction, 1, divided by, 3, end fraction unit.

How many

1/3 unit cubes does it take to fill the whole prism

135

Step-by-step explanation:

If the volume is 5 cubic units, then the prism will have 135 1/3 sized cubes.

Each cube inside the prism can be split into 27 smaller cubes with side lengths 1/3 by 1/3 by 1/3.

This means the original 5 cubes becomes 5*27 = 135.