3000 examples in mathematics. 3-4 grades. Mental arithmetic. Non-timetabled multiplication and division

This manual presents material aimed at developing mental arithmetic skills on the topic of "Non-timetabled multiplication and division" for 3-4 grades. Mental arithmetic enhances students' quick thinking and attention, fosters mathematical ingenuity, and strengthens memory. Proper organization of mental arithmetic exercises in elementary school requires daily and short (5 to 10 minutes) tasks. Sequentially completing the tasks in this manual will help students master the skills of mental arithmetic in all forms: - Rapid auditory counting (the teacher orally states a problem and receives an oral answer from the student after a few seconds); - Visual counting (the problems are written down, and the answers are stated orally or written); - Combined counting (the teacher dictates problems, and the student writes down the answers); - Oral problem solving. The manual can be used in mathematics lessons as well as for independent work at home.