Question

a hotel has 128 rooms on each floor. there are 4 floors in all.if 334 of the rooms in the hotel have been cleaned how many rooms stilll need to be cleaned?

Answer 1

Do 128 ×4=512 rooms 512 -334 =178 rooms need to be cleaned.

Answer 2

Do 128 x 4, which equals 512. Then do 512 - 334 and you'll get how many rooms still need to be cleaned.