Mathematics. 1 class. We develop subtracting and addition skills. Petrenko S.

This textbook will contribute to the effective study of mathematics in the 1st grade. In a simple and affordable form, it will allow to develop, fix and check the key skills of the child on the most important topics of the subject being studied.

specially selected examples will help not only master the simplest arithmetic actions of addition and subtraction in the range of 20, but will also teach correctly To draw up mathematical solutions.

All tasks are clearly formed and systematized within the same turn. The child can independently evaluate the work performed on each page - circle the sun in the fields with the corresponding assessment.

compiler: Petrenko S. century