each large tile covers 3x3 = 9 small tiles.
So, what do you think?
a bathroom floor is covered by 15 tiles. each tile measures 18 in. by 18 in. how many floor tiles measuring 6 in. by 6 in. would be needed to cover the same area?
2 answers
How many 10 cm x10 cm tile you will need to cover a 10 m by 5 m floor.