The ability quickly and correctly to do mental arithmetic is the need dictated by time. Shopping, planning of time, professional activity - here not the full list of actions which are impossible without ability quickly to consider. This ability begins to be formed at elementary school, and the task of parents is to make the oral account automatic. It is reached by repeated repetition, storing and trainings.
It is required to you
- The table of addition and subtraction within 10.
- The table of addition and subtraction with transition through ten.
- Multiplication table.
Instruction
1. Learn structure of numbers of the first ten and on its basis - the table of addition and subtraction within 10. The child has to know well that 4 is 1 and 3, 7 is 5 and 2, etc. Make and solve examples, you ask the child to help you with the account, for example, of plates or apples, stops, toys. The practical orientation will show to the child need of ability to consider quickly and correctly.
2. Work knowledge of structure of numbers of the second ten: 13 - it is 5 and 8, 17 is 9 and 8, etc. On the basis of this knowledge it is easy to learn the table of addition and subtraction with transition through ten (examples of a look 6+9, 16-7). Automate knowledge of this table.
3. Learn a table of multiplication and division. It is necessary to do it gradually, firmly acquiring studied. Various books exercise machines will help to make knowledge stronger.
4. On the basis of the above receptions, work the solution of examples of a look 26-3, 45+2, 37-9, 56+8 and similar. Daily classes, patience in mastering the oral account will help to learn to count quickly and correctly.