Question

Use "converting units"
Mrs. fallis wants to tile the kitchen counter that has an area of 2 square meters. She has 2000 square tiles with 3 cm sides. Does she have enough tiles to cover the counter?

Answer 1

Mrs. Fallis needs to convert the units of the tiles from square centimeters to square meters to see if she has enough to cover the counter.

1 cm is equal to 0.01 meters, so the area of each tile is:

3 cm x 3 cm = 9 square cm
9 square cm x 0.0001 square meters/square cm = 0.0009 square meters

Mrs. Fallis has 2000 tiles, so the total area of the tiles is:

2000 tiles x 0.0009 square meters/tile = 1.8 square meters

Since the area of the counter is 2 square meters and the total area of the tiles is 1.8 square meters, Mrs. Fallis does not have enough tiles to cover the counter. She needs to buy more tiles.