Maths. 1 class. Calculations according to schemes within 20. Addition and subtraction with five numbers

The manual in the form of schemes presents examples for addition and subtraction in the range of 20. Their solution is an excellent training for the formation of the skill of fulfilling all oral calculations provided for by the school curriculum.
Designing examples according to schemes - good preparation for acquaintance with block diagrams and linear algorithms that are considered in the study of computer science in elementary school. Analyzing the schemes, students find the numbers with which arithmetic operations need to be performed, train in establishing causal relationships, choosing a solution method.
Materials of the manual will help to fix the studied, practice memory, develop logical thinking.
At the end of each page there is a place to record the time during which the child completed the calculations, as well as the time to evaluate this result.
For self -testing at the end of the book, answers are given.
Manual can be used in school lessons and for independent classes at home