The number cubes the fifth grade math classes use are packed into a box. when the
The number cubes the fifth grade math classes use are packed into a box. when the box is full, it has 5 rows of 4 cubes with 6 layers of cubes. mrs. benson sees that one layer of cubes is missing from the box. how many number cubes are in the box? (a) 96 (b) 100 (c) 90 or (d) 50