You want to use square tiles to cover the top of a table you're making. The top is 30 inches by 18 inches. What is the side measure of the largest-sized square tile you can use to cover the tabletop without any overlap or cutting?
you can use greatest common factor(gcf) list the factors of 18 and 30. 18- 1, 2, 3, 6, 9, 18 30- 1, 2, 3, 5, 6, 10, 15, 30 now the factor that is greatest is 6. this mean you can use the largest square tile of 6in by 6in without overlap or cutting.