You spend half of your allowance on monday. on tuesday, you spend half of what is left. then on wednesday, you spend half of what remains.
what fraction of your allowance do you have left?

Problem melissa is her dad build a walkway in their backyard. the walkway will be 54 feet long and 1.5 feet wide. the local hardware store sells tiles which are 1.5 by 1.5 feet and come in boxes of 12. how many boxes of tiles do they need?

What is the total surface area of this square pyramid?

What is negative 3/9 times negative 2/8 ?