This book acquaints a kid with one of major divisions of mathematics - by great numbers and their comparison. Understanding, what a mathematical great number is important new skill of child, necessary for the further successful study of mathematics. The main feature of the methodology offered in a book consists in that a child studies to perceive great numbers and compare them, not counting. Herein a kid is helped by interesting histories bright illustrations and row of the special receptions with that kids and parents will become acquainted on the pages of book.