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< 97Exx | 97-XX | 97Gxx >
97-XX Mathematics education
97Fxx Arithmetic, number theory
97F10   Comprehensive works
97F20   Pre-numerical stage, concept of numbers
97F30   Natural numbers
97F40   Integers, rational numbers
97F50   Real numbers, complex numbers
97F60   Number theory
97F70   Measures and units
97F80   Ratio and proportion, percentages
97F90   Real life mathematics, practical arithmetic
97F99   None of the above, but in this section
< 97Exx | 97-XX | 97Gxx >
American Mathematical Society