There are many ways to teach numbers to kids. Abacus is a great tool to teach your child simple math such as counting, addition, subtraction, multiplication, and even division. This is the “B” book of Level-8. Other than the topics of Plus/Minus/ Multiplication/ Division/Square/BODMAS / Decimals / and percentage (%) which were covered in Level-7, this level contains CUBES also. It has the multiplication of Four-digit numbers with three-digit numbers, decimals of Triple and Four-digit, division of Four-digit numbers with one-digit numbers. Also special emphasis on mental maths. It helps in the whole brain development of a child. These Books are very attractive and of very good quality. This book is suitable for those students only, who have completed the first 7 Levels of Abacus education.