Now calculators are built in many gadgets. But when near at hand there is no of them, will help out the simplest skills. It is possible to divide a corner not only by means of a pencil and paper, but also a branch on the earth or a finger on sand.
It is required to you
- - sheet of paper;
- - handle or pencil.
Instruction
1. Division into a digit without the rest - the simplest case for division by a corner. For an example divide 536 into 4. For this purpose write down them on one line nearby and not to mix, put between them a corner. Under horizontal line you will write private or result of division. At first divide the first figure of a dividend, that is 5 into 4. Write down 1, under the five below the line - the four and subtract from the first the second. Write down a difference below. Nearby write the following figure of a dividend, that is 3. 13 turn out. Divide into 4, result - the three - write on the right, and again demolish the rest down. Transfer to it the last figure of initial number, 16 will turn out. Divide into 4 and write down the four - the last figure of the answer. It turned out that one fourth from 536 is 134. To check result multiply a column 134 and 4. 536 will turn out. If check did not work, look for a mistake in transfer of figures at division by a corner.
2. Division of round numbers essentially differs in nothing. Only before division get rid of excess zero. Such are understood as categories which are in both numbers. For example, if it is necessary to divide 371000 into 700, then before division by a corner cross out the last two zero in each number. That is you divide 3710 into 7. It is necessary to cross out identical number of zero, otherwise the result will be incorrect.
3. At division of proper fractions do the return operation: add orders to a dividend that their number corresponded to a divider. For example, if you divide 5 into 16, then attribute one zero. If 5 it is necessary to divide into 160, then attribute two zero. But at the same time do not forget to put the end and the same number of zero to private. In the first case the answer will begin with the tenth shares, in the second - with the 100-th. In other words, division by a corner is a simplest way to transfer a proper fraction to decimal.