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How to multiply and divide fractions

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A fraction in mathematical sciences is a number that consists of a single or several parts of a unit, which in turn are called fractions.

The number of shares to which the unit was divided is the denominator of fractions, the number of fractions taken is the numerator of the fraction.

You will need

• - knowledge of the multiplication table or calculator-
• - paper-
• - a pen.

Instructions

1

To multiply a fraction and a natural number,Multiply the numerator of the fraction you multiply by this number, and leave the denominator of the fraction unchanged. The numerator of a fraction is the dividend, or that part of it that is above the horizontal or slash, which means the sign of division when the fraction is written. The denominator of a fraction is a divisor, or that part of it that is under a horizontal or slash.

2

To multiply a mixed fraction and a naturalNumber, multiply the whole fraction of this fraction, as well as its numerator, by this number, and leave the denominator of the multiply fraction unchanged. A fraction is mixed if it is written in the form of a proper fraction and an integer, and in this case it is understood as the sum of a fraction and an integer.

3

To multiply one fraction by another, firstMultiply the numerator of the first fraction by the numerator of the second fraction, then multiply the denominator of the first fraction by the denominator of the second fraction. Write the first found product as the numerator of the fraction, which is the desired result of the work, and write the second found product as the denominator of the same fraction.

4

To multiply mixed fractions,Note each mixed fraction as an irregular fraction, and then apply the multiplication rule. Correct is the fraction in which the numerator is modulo less than the denominator modulo. If the fraction does not fit this definition, then it is incorrect. In order to move from the mixed fraction to the wrong one, multiply the whole fraction of this fraction by the denominator, and then add the numerator to the resulting product. Write the final amount as the numerator of the received irregular fraction, and leave the denominator unchanged.

5

To divide one fraction into another, multiply the first fraction by the fraction that is the reciprocal of the second. To obtain the reverse fraction, swap the numerator and denominator.

How to multiply and divide fractions Was last modified: June 21st, 2017 By
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