Mathematics. All tasks for lessons and olympiads. Grade 3

The manual contains tasks on the main topics of the Mathematics program for grade 3, which will help to achieve high results in mathematics, develop mathematical thinking, teach you to make non -standard decisions and work with information.
The level of complexity of tasks is different. The algorithm for solving some tasks is well known to children, others require a child based on an analysis of the conditions to independently determine the algorithm of actions. The tasks marked by the star are similar to the Olympiad. Therefore, children will cope with some tasks easily, some tasks may cause difficulties, and they will need to return to their implementation again. Near such tasks, the child draws an exclamation mark.
The manual contains answers or solutions to tasks that can cause difficulties