The chart I would create for this would list the difference associated with each factor pair

1*48, difference = 47

2*24, difference = 22

3*16, difference = 13

4*12, difference = 8. We can stop here, because we found the answer.

The numbers are 4 and 12.

6*8, difference = 2

8*6 ... Now we're going back over ground we've covered already.

1*48, difference = 47

2*24, difference = 22

3*16, difference = 13

4*12, difference = 8. We can stop here, because we found the answer.

The numbers are 4 and 12.

6*8, difference = 2

8*6 ... Now we're going back over ground we've covered already.