Raj recorded the scores of six of his classmates in the table. Math Scores 98 76 100 88 82 70 What is the range of their test scores? 28 30 85 86

28 30 85 86 = 58

98 76 100 88 82 70=30

The first step in solving this problem is to determine the highest and the lowest score. The highest score is 100 while the lowest score is 70. Range can be computed by deducting the lowest score to the highest score:

100 - 70 = 30

Therefore, the range of their test scores is 30.