3000 examples in mathematics. 4th grade. Control and verification work. Addition and subtraction within 1000

The manual contains control and verification work according to one of the basic for the fourth class of topics - "addition and subtraction in the range of 1000". Like any other topic, it requires attentive understanding and solid consolidation.
Many parents are convinced that their children think very well, but you can completely be confident in this only when the account skill is brought to automatism. In this case, for example, the student writes after 3-5 seconds.
On each page, control examples are given for independent solution. After them, on the right, the student records the time for which they were decided. On the left are the numbers showing the perfect time, a satisfactory and bad result that should make the student think. Each control shows examples for working on errors.
It is difficult for the teacher to check so many examples. It is good if the time spent on the solution of all the work will be celebrated by adults at home. To achieve excellent results, every day you need to work out one page.
The manual can be used as additional material in mathematics lessons, as well as for homework