The reader will find in this book problems extracted, for the most part, from math competitions for elementary school students. Each chapter brings a set of questions, presented in an order of increasing difficulty, as well as its solutions. The latter do not require deep knowledge in mathematics, just a little logic, the ability to organize thoughts and, in some cases, an ingenious idea. The problems cover two important areas of mathematics, counting and arithmetics, and can serve as a fun way to learn these subjects.
