How to teach to solve examples within 10?
It's simpler and quicker to explain to the child how the examples are solved within the first ten. Obligatory conditions for this are a conscious oral account back and forth, knowledge of the previous and next number, as well as its composition: for example, 5 is 1 and 4 or 2 and 3.
At first, counting sticks with which the child will understand how to add or subtract numbers are good. It is undesirable to use fingers or a ruler for counting - so the child does not learn to think. This is the opinion of most teachers, although in fact it turns out that this stage is simply necessary for some. Someone passes it faster, but someone lingers. The more the child does, the better the result.
For children, an excellent example for learning to score is dominoes. Using it, it's easy to explain: 4-4 = 0 or 5 = 5.
Examples can be visualized - to draw a certain number of apples, sweets and other, taking away or adding them.
How to teach a child to solve examples of up to 20?
If the account within a dozen has already been mastered, it's time to go further - learn to add and subtract the numbers of the second ten. In fact, this is quite easy if the child knows the "composition" of the number and has the notion of what is bigger and what is less.
Now, illustrative examples are as important as in the development of the top ten.
Consider an example of the addition of 8 + 5. This is where the knowledge of the number is required, because 5 is 2 and 3. By 8 we add 2, we get a round number 10, add to it the remaining 3, no longer a problem.
To teach subtraction, you also need to divide the numbers into parts. To subtract from fifteen eight, you need to divide the first number into a sum of numbers 10 and 5. After that, divide the subtrahend by 5 and 3. Now the most interesting happens - from the first digit of the subtrahend (10) we subtract the last digit from the second of the terms of the number eight. We get the seven.
How to teach a child to solve examples of up to 100?
Children who have mastered the account within twenty, it will be easy to understand and in the other dozens. Now the program requires that addition and subtraction be carried out in the mind, and not in a column. It is necessary to show the child how to do it.
43 + 25. To 3 units we add 5 units and write it a little apart from the sign of equality, leaving room for one more figure. Then to 4 dozen add 2 dozen and get 68. It is important that the child clearly understood that dozens and units can not be confused. The same example can be solved in column by the same principle.
If the child does not manage to solve the examples, you should talk with the teacher so that she will pay attention to this problem. But do not take responsibility and off yourself - studying at home, in a calm environment sooner or later will give a positive result.