How to translate interest in decimal fraction 🚩 How to translate interest in an ordinary fraction 🚩 Mathematics

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How to translate interest in decimal fraction

Situations when it is necessary to translate percentages into a simple or decimal fraction, can be the most unexpected. Calculator that does all this automatically, may not be at hand. For example, you need to make a solution or simply to win 10% of the substance available. It is much more convenient to do if you know what part of the total you need to take.

How to translate interest in decimal fraction

You will need

  • - Definition of decimal fraction;
  • - definition of interest;
  • - paper;
  • - a pen.

Instruction

Remember

what

decimal. This is such a fraction, the denominator of which is some degree of number 10. If you try to record it with a simple fraction, it will always be 10, 100, 1000, etc. in the denominator, the numerator is a specified number. At the same time, the comma is separated so much figures,

how many zerule

In the denominator. That is, in order to record a decimal fraction, for example, 3/100, it is necessary to postpone 2 digits after the comma: 3/100 = 0.03.

Remember that

that

percent. This is one hundredth of one or another number. To burn 1% decimal fraction, it is necessary, as in the first example, separate the semicolons 2 numbers: 1% = 1/100 = 0.01.

To translate into fraction several

percent

Do, in the same way. For example, you need to record not 1%, but 34%. Write 0, then - the desired number. Because we are talking about the number of percentages, then in the denominator, the simple fraction you will stand the number 100. Accordingly, in the decimal fraction it is necessary that the latter figure also stood in the discharge of hundredths. Squeeze it from her left 2 characters, including the number 4. It will turn out 0.34. That is, 34% = 34/100 = 0.34.

It happens that you need to write down not a whole number of percent, but some part of it. Remember how simple fractions are translated into decimal. If you need to find half

Percent

, Move first the fraction itself, making the denominator to a multiple 10. It will look like this: 1/2 = 5/10 = 0.5. Accordingly, 1/2% can be written as 0.5%. In some cases, this can only be done approximately. For example, if you need to write 1/3 percent, you will have an infinite decimal fraction. Depending on the assignment conditions, you can record this part of the percentage with different degrees, that is, 0, 3 or 0.33. "Trok" Ambassador of the comma may be more.

Arithmetic actions with percentages translated into a decimal fraction are performed in the same way as with any decimal fractions. In this case, in order to find, which is equal to such a number of percent of the specified number, you no longer need to divide this number 100 and multiply by percent. You simply multiplied the number to the resulting decimal fraction.

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