The book is designed for people of all ages from students familiar with the arithmetic of primary classes to gray-bearded elders. On the one hand, it is a textbook on mathematics for the middle classes, built on the basis of the Torah, and on the other – the initial course of Kabbalah for those who wish. This book is for both ordinary and religious schools in Israel. It contains 17 sections related to each other and related to different areas of mathematics. This textbook will also serve as a good guide for mathematics teachers in the transition to a completely new, Jewish education system in Israel and is applicable to the creation of similar textbooks on physics, chemistry, biology, and other subjects in high school.