Уроки

Тренажёры

Математика

Математика Сложение Умножение

Основные понятия

Свойства первых четырех арифметических действий

Теория

<img width="26" height="26" data-src="https://obrazavr.ru/wp-content/themes/Main/img/icons/post.svg" class="icon lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="><noscript><img width="26" height="26" data-src="https://obrazavr.ru/wp-content/themes/Main/img/icons/post.svg" class="icon lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="><noscript><img width="26" height="26" data-src="https://obrazavr.ru/wp-content/themes/Main/img/icons/post.svg" class="icon lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="><noscript><img width="26" height="26" data-src="https://obrazavr.ru/wp-content/themes/Main/img/icons/post.svg" class="icon lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="><noscript><img src="https://obrazavr.ru/wp-content/themes/Main/img/icons/post.svg" width="26" height="26" class="icon">

Сложение

<img width="26" height="26" data-src="https://obrazavr.ru/wp-content/themes/Main/img/icons/post.svg" class="icon lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="><noscript><img width="26" height="26" data-src="https://obrazavr.ru/wp-content/themes/Main/img/icons/post.svg" class="icon lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="><noscript><img width="26" height="26" data-src="https://obrazavr.ru/wp-content/themes/Main/img/icons/post.svg" class="icon lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="><noscript><img width="26" height="26" data-src="https://obrazavr.ru/wp-content/themes/Main/img/icons/post.svg" class="icon lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="><noscript><img src="https://obrazavr.ru/wp-content/themes/Main/img/icons/post.svg" width="26" height="26" class="icon">

Вычитание

<img width="26" height="26" data-src="https://obrazavr.ru/wp-content/themes/Main/img/icons/post.svg" class="icon lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="><noscript><img width="26" height="26" data-src="https://obrazavr.ru/wp-content/themes/Main/img/icons/post.svg" class="icon lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="><noscript><img width="26" height="26" data-src="https://obrazavr.ru/wp-content/themes/Main/img/icons/post.svg" class="icon lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="><noscript><img width="26" height="26" data-src="https://obrazavr.ru/wp-content/themes/Main/img/icons/post.svg" class="icon lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="><noscript><img src="https://obrazavr.ru/wp-content/themes/Main/img/icons/post.svg" width="26" height="26" class="icon">

Умножение

Алгебраическое знакоположение

Теория

<img width="26" height="26" data-src="https://obrazavr.ru/wp-content/themes/Main/img/icons/post.svg" class="icon lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="><noscript><img width="26" height="26" data-src="https://obrazavr.ru/wp-content/themes/Main/img/icons/post.svg" class="icon lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="><noscript><img width="26" height="26" data-src="https://obrazavr.ru/wp-content/themes/Main/img/icons/post.svg" class="icon lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="><noscript><img width="26" height="26" data-src="https://obrazavr.ru/wp-content/themes/Main/img/icons/post.svg" class="icon lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="><noscript><img src="https://obrazavr.ru/wp-content/themes/Main/img/icons/post.svg" width="26" height="26" class="icon">

Употребление букв

<img width="26" height="26" data-src="https://obrazavr.ru/wp-content/themes/Main/img/icons/post.svg" class="icon lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="><noscript><img width="26" height="26" data-src="https://obrazavr.ru/wp-content/themes/Main/img/icons/post.svg" class="icon lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="><noscript><img width="26" height="26" data-src="https://obrazavr.ru/wp-content/themes/Main/img/icons/post.svg" class="icon lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="><noscript><img width="26" height="26" data-src="https://obrazavr.ru/wp-content/themes/Main/img/icons/post.svg" class="icon lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="><noscript><img src="https://obrazavr.ru/wp-content/themes/Main/img/icons/post.svg" width="26" height="26" class="icon">

Алгебраическое выражение

<img width="26" height="26" data-src="https://obrazavr.ru/wp-content/themes/Main/img/icons/post.svg" class="icon lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="><noscript><img width="26" height="26" data-src="https://obrazavr.ru/wp-content/themes/Main/img/icons/post.svg" class="icon lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="><noscript><img width="26" height="26" data-src="https://obrazavr.ru/wp-content/themes/Main/img/icons/post.svg" class="icon lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="><noscript><img width="26" height="26" data-src="https://obrazavr.ru/wp-content/themes/Main/img/icons/post.svg" class="icon lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="><noscript><img src="https://obrazavr.ru/wp-content/themes/Main/img/icons/post.svg" width="26" height="26" class="icon">

Знаки, употребляемые в алгебре

Содержание блока

Свойства первых четырех арифметических действий

Алгебраическое знакоположение