Question

about 3/10 of earth's surface is covered by land and the rest is water what fraction of earth's surface is covered by water

Answer 1

It would be 7/10 because since 10/10 is the Earth, and 3/10 is water, 10-3 is 7.

Answer 2

7/10 is the correct answer because 10 is the whole, then 10 minus 3 equals 7. Or 7 plus 3 equals 10.