What a question.      Wow! This impossible fast finisher activity will blow my head off! If you think it can't                       be that hard,then read the question: Use the digits 4,5,6 and 7 to create two 3 digit numbers where the sum is between 1,000 and 1,100 and the difference is less than 100. Some strategies I used were to use the small numbers so it can be between 1,000 and 1,100 but also I had to remember that the difference is less than a hundred. So I had to use one small number and one bigger number. Well, if you think you're brainy enough to do it.