Mental arithmetic 2. Learning mathematics with an abacus. Addition and subtraction up to 1000

Doesn"t your child like mathematics at all? He is ready to burst into tears every time he is asked how much two two will be? Mental arithmetic will be your salvation. Having mastered it, your son or daughter will add and subtract five -digit numbers faster than the calculator! But do not rush to hire a tutor and do not waste precious time and money on a special school. This book is a continuation of a full course of classes according to a unique methodology. For the price of one lesson, the child will immediately master both a written and an oral account! With the help of Abakus, we will teach your son or daughter to add and subtract numbers up to 1000!
Mental arithmetic will teach a child:
quickly count in the mind,
It is better to concentrate attention,
Train memory,
Develop imaginative thinking.
The main thing is to do regularly and with pleasure. Very soon, your little windoderkind will surprise everyone! The book is recommended for primary school children and all the guys who are interested in mathematics!