Measure Area by Counting Squares Practice Test

Maria covers a rectangular table with square tiles. She uses 4 rows of tiles, with 6 tiles in each row. Then she removes 3 tiles from one corner to make space for a lamp. What is the area of the table that is still covered by tiles?

A rectangular classroom floor is being covered with square carpet tiles. The floor is 8 tiles long and 5 tiles wide. After installation, the teacher notices that 6 tiles in various spots are damaged and must be removed for replacement. What area of the floor currently has good carpet tiles?