There is a room that needs 700 pieces of square tiles with a side length of 2 decimeters. If you use square tiles with a side length of 2.5 decimeters, how many pieces do you need
It needs 2x700 ÷ (2.5x2.5) = 448 pieces
It needs 2x700 ÷ (2.5x2.5) = 448 pieces