Lecture
Multiplication of ordinary fractions will be considered in several possible variants.
This is the simplest case in which you need to use the following rules for multiplying fractions .
To multiply a fraction by a fraction , you need:
Example.
Before multiplying the numerators and denominators, check whether the fraction can be reduced. Reduction of fractions during calculations will greatly facilitate your calculations.
Example.
To multiply a fraction by a natural number, you need to multiply the fraction numerator by this number, and leave the fraction denominator unchanged.
If the result of multiplication is an improper fraction, do not forget to turn it into a mixed number, that is, select the integer part.
To multiply mixed numbers, you must first turn them into irregular fractions and then multiply them according to the multiplication rule of ordinary fractions.
Sometimes in the calculations it is more convenient to use another method of multiplying an ordinary fraction by a number.
To multiply a fraction by a natural number, the denominator of the fraction should be divided by this number, and the numerator should remain the same.
As can be seen from the example, it is more convenient to use this variant of the rule if the denominator of a fraction is divided without a balance by a natural number.
Comments
To leave a comment
Arithmetic
Terms: Arithmetic