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Mathematical competition tasks Calculator solving some mathematical competition task |

Time. Total sum Calculator sums up input time intervals |

Total volume This calculator calculates total volume as sum of volumes of entered rectangular parallelepipeds. |

Total square This calculator calculates total square as sum of squares of entered rectangles |

Vector Addition Calculator This online calculator performs vector addition and displays vectors and vector sum graphically. |

Quick Sum Calculator This online calculator sums up entered integer numbers. Any symbol what is not a digit, for example, a space, a comma, a semicolon, etc, serves as a separator. It is useful when you need to sum up several numbers but do not have speadsheet program at hand. |

Sum of Partial Sums of Arithmetic Sequence This online calculator calculates partial sums of an arithmetic sequence and displays the sum of partial sums. |

Sum of Partial Sums of Geometric Sequence This online calculator calculates partial sums of geometric sequence and displays sum of partial sums. |