The fx-55 simplify key reduces fractions, step-by-step by dividing out each common factor. The fx-55 also allows integer division with remainder by showing the remainder on the same screen.

8 digits with 2 exponents in display | Dual power: Solar and battery |

Floating negative sign appears to the left of the number displayed | Integer division with remainder |

Reciprocal capability | Converts from fraction to decimal and vice-versa |

18 levels of parentheses | Fixed decimal capability |

Backspace/correction key | 3-digit separator |

True fraction display | Instructional materials available in English and Spanish |