Question

pat is thinking of a number when she round her number to nearest 10 she get 580. when she round her number to the nearest 100 could she get 500

Answer 1

No, she could not because say her lowest possible number was 575. Remember the phrase: 5 or more raise the score, 4 or less, let it rest. We use 575 and we look to the 7, greater than 5 so we raise the score to 600. So, no this is not possible.