Start at 4, subtract 3 each time:

  _____   _____   _____   _____   _____      4  1  -2  -5  -8

 
 Start at 2, subtract 5 each time:

  _____   _____   _____   _____   _____      2  -3  -8  -13  -18

 
 Start at 8, subtract 3 each time:

  _____   _____   _____   _____   _____      8  5  2  -1  -4

 
 Start at 4, subtract 7 each time:

  _____   _____   _____   _____   _____      4  -3  -10  -17  -24

 
 Start at 6, subtract 3 each time:

  _____   _____   _____   _____   _____      6  3  0  -3  -6

 
 Start at 8, subtract 5 each time:

  _____   _____   _____   _____   _____      8  3  -2  -7  -12

 Lines = 6  Problems = 30 Number Correct _____ Number Wrong _____