Arithmetic 24 Mathematics 22 Number theory 14 Arithmetic-- Mathematics 10 Algebra 9 Computer arithmetic 8 Business arithmetic-- Mathematics 6 Set theory 6 Arithmetic functions 5 Computer organization 5 Fuzzy arithmetic 5 Geometry 5 History 5 Algorithms 4 Computer science 4 Field theory 4 Foundations 4 Fractions 4 Fuzzy sets 4 averages 4 decimals 4 Agricultural Extension 3 Arithmetic operations 3 Computer engineering 3 Computer interfaces 3 Data encryption (Computer science) 3 Logic, Symbolic and mathematical 3 Neural networks 3 Numbers, Prime 3 Operations research 3