• 4th grade subj.
• Basic math.
• Calculations (abbr.)
• Computations (abbr.)
• Elem. sch. subj.
• Elem. school subj.
• Elem. school subject
• Elem. subj.
• Elementary school subj.
• Grade school math course
• Grade school subj.
• Math subj.
• Math. branch
• Math. subject
• One of the three Rs (abbr.)
• Part of A.L.U.
• School subj.
• The R that starts with an a: abbr.
• Three-R's mem.