How do i round 30,944 to the nearest thousand

Allie answered 72% of the questions on her math test correctly. if she answered 18 questions correctly, how many questions were on the test?

1/2+1/6-3/4 simplify the given expression leaving the answer in improper fraction form.

From a party ,lori made a fruit punch from 1 gallon of orange juice ,2 quarts of grape juice,5 pints of pineapple juice,and 12 cups of cranbarry juice order the juice from least to greatest amount used in the fruit punch