Ineed fast! each friday, the sixth grade students in mr. shin's physical education class spend the first five minutes doing crunches. instead of keeping track of the total number of crunches the students do each week, mr. shin keeps track of how they do compared to the week before and records the result as a positive or negative number. ben did 10 more crunches this week than last week. what number would mr. shin record? gail did 8 less crunches this week than last week. what number would mr. shin record? nathaniel did the same number of crunches this week as last week. what number would mr. shin record?