During aerobic glycolysis the number of net ATPs formed are 8. Steps involved in the formation of ATP during glycolysis are: Conversion of 2 molecules of glyceraldehyde 3 phosphate to 1,3 bisphoglycerate release 2 molecules of NADH which yield 6 ATP. Conversion of 2 molecules of 1,3 BPG to 3 phosphoglycerate yield 2 ATP. Conversion of 2 molecules of phosphoenol pyruvate to pyruvate yield 2 ATP. Steps involved in the consumption of ATP during glycolysis are: Conversion of glucose to glucose 6 phosphate Conversion of fructose 6 phosphate to fructose 6 bis phosphate Total ATP formed during glycolysis : 10 ATP utilised during glycolysis : 2 Net ATP formed during glycolysis : 8 Net ATP produced during anaerobic glycolysis is only 2. Ref: Medical Biochemistry By N. Mallikarjuna Rao page 160.