How many tiles of sizes 50cm x 50cm will fit in a square size 1m x 1m?

To find the number of tiles that can fit in a 1m x 1m square, we need to divide the area of the square by the area of each tile.

The area of the square is:
1m x 1m = 1 square meter

The area of each tile is:
50cm x 50cm = (50/100)m x (50/100)m = 0.25 square meters

So, the number of tiles that can fit in the square is:
1 square meter / 0.25 square meters = 4 tiles

Therefore, 4 tiles of the size 50cm x 50cm will fit in a square size 1m x 1m.