Maria has 4.5 gallons of water to give to players on her soccer team. she is pouring the water into bottles that hold 1 quart. how many water bottles can she fill?

4 quarts = 1 gallon.

and every bottle is 1 quart so 4 bottles equals 1 gallon.

with the 4 gallons she has just do 4 times 4 equals 16 so 16 bottles of water for 4 gallons.

now with the .5 gallons left thats half the bottles also so 2 bottles of water.

16+2=18

she can fill 18 bottles of water