Mathematics. All chains of examples for oral and written work. Grade 2

The main methods of account are formed in the child in the first years of training. Therefore, it is very important to pay special attention to the development of these skills.
An important place in the acquisition of calculation skills is occupied by oral and written work with mathematical chains. The solution of the mathematical chains of examples will help the child work out and fix to automatism the scope of account, activate mental activity, develop the memory, attention and speed of the reaction, and prepare for the implementation of more complex calculations for multiplication and division. Solving the chains of examples from simple to more complex, students will work out the rules for the procedure for performing calculations in examples with brackets and without them.
The book includes: "Addition and subtraction with brackets and without brackets within 10", "Addition and subtraction with brackets and without brackets within 20 "," addition, subtraction, multiplication and division by a number of 0 to 9 without brackets and with brackets within 20 "," Addition and subtraction of numbers, multiple of 5 and 10, without brackets and brackets within 50 "and others.
The book is prepared in accordance with the requirements of the Federal State Educational Standard of Primary Education. It can be used when working with any textbook included in the federal list. The manual will be useful in mathematics lessons and for independent classes at home