Project Gutenberg 2005-08-14 Public domain in the USA. 5077 Rachinskii, Sergei Aleksandrovich 1836 1902 Рачинский, Сергей Александрович Rachinskij, Sergej Aleksandrovich 1001 задача для умственного счета 1001 tasks for mental calculation - "1001 задача для умственного счета" by Sergei Aleksandrovich Rachinskii is a mathematical workbook written in the late 19th century. This collection contains a vast array of arithmetic problems designed for educational purposes, particularly for use in classrooms. The problems are presented in a straightforward language, often contextualized in practical scenarios, enabling learners to enhance their mental calculation skills. The opening of this workbook introduces the format and structure of the challenges included. It details that the tasks are tailored for students and can be applied in arithmetic lessons. The first few examples presented illustrate various calculations involving reading, purchasing land, and budgeting, emphasizing real-world situations that require mental arithmetic. Each problem is followed by a solution, which helps learners verify their understanding and mastery of the concepts presented. (This is an automatically generated summary.) ru Word problems (Mathematics) Mathematics -- Problems, exercises, etc. QA Text Browsing: Mathematics Browsing: Science - General 280180 280181 2024-10-07T10:56:17.095359 2023-09-07T11:21:06.998692 text/html text/html 176009 2020-12-12T09:44:13 text/html; charset=windows-1251 57631 2020-12-12T09:44:13 text/html; charset=windows-1251 application/zip 152621 2024-10-07T10:56:23.363309 application/epub+zip 155239 2024-10-07T10:56:20.069342 application/epub+zip 134912 2024-10-07T10:56:18.851363 application/epub+zip 332077 2024-10-07T10:56:25.654325 application/x-mobipocket-ebook 321835 2024-10-07T10:56:22.671339 application/x-mobipocket-ebook 288004 2022-09-08T05:57:28.172823 application/x-mobipocket-ebook 271490 271506 2024-10-07T10:56:16.390378 2023-09-07T11:21:06.536680 text/plain; charset=us-ascii text/plain 171273 2020-12-12T09:44:13 text/plain; charset=windows-1251 59252 2020-12-12T09:44:13 text/plain; charset=windows-1251 application/zip 19812 2024-10-07T10:56:25.779316 application/rdf+xml 15943 2024-10-07T10:56:19.458357 image/jpeg 3953 2024-10-07T10:56:19.178321 image/jpeg 150154 2024-10-07T10:56:17.120369 application/octet-stream application/zip Archives containing the RDF files for *all* our books can be downloaded at https://www.gutenberg.org/wiki/Gutenberg:Feeds#The_Complete_Project_Gutenberg_Catalog ru.wikipedia