The table below shows the recommended amount of sodium, in milligrams (mg) per day, for all ages according to the Institute of Medicine.
Recommended Daily Intake of Sodium
Age1−3 years4−8 years9−50 years51−70 years70 years and upSodium (mg)1,0001,2001,5001,3001,300
The recommended daily intake of sodium for a toddler (1-3 years old) is what fraction of that recommended for a preteen (9-12 years old)?