452 functionsNatural Textbook 2-line DisplayRemainder calculationsGCD / LCMInequality calculationsRatio calculationsPrime factorisationSolve functions & Evaluate expressionsIntegration & DifferentiationSigma calculations40 scientific constants & 40 metric conversionsQ1, Med, Q3 calculations in statisticsTP of Quadratic equationStatistics MODE – Data handling and Regression analysisDual Table MODE (2 functions)Complex number, Base-n, Equation, Matrix & Vector MODESDistribution Calculation MODEWhat’s in the box1 xCasio FX-991ZA Plus II Advanced Scientific Calculator & Product Manual