Download or read book Mental maths. Simple level exercises written by Яна Малова and published by Litres. This book was released on 2020-03-06 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This manual includes all possible combinations of single and double digits at the level “SIMPLE” (addition). The collection contains more than 700 examples (10 options), divided into sections according to the composition of numbers.The manual is designed to solve examples of mental arithmetic at the “SIMPLE” level on the abacus and mentally. It is recommended to use both for self-development of the acquired counting skills, and in preparation for classes and tests in mental arithmetic.