1, the basic principle of fractional multiplication
The basic principle of fractional multiplication is to multiply the numerator and denominator of two fractions to form a new fraction.
2. Specific calculation steps of fractional multiplication
(1) Multiply two fractions of a molecule to get a new molecule.
(2) Multiply the denominators of the two fractions to get a new denominator.
(3) The new numerator and denominator are combined into a new fraction, that is, the result of fractional multiplication is obtained.
3. The nature of fractional multiplication
(1) commutative law: fractional multiplication satisfies commutative law, that is, a/b * c/d = c/d * a/b.
(2) Association law: fractional multiplication satisfies the association law, that is, (a/b * c/d) * e/f = a/b * (c/d * e/f).
(3) Distribution law: Fractional multiplication and integer multiplication satisfy the distribution law, that is, A/A/B * (C+D) = A/B * C+A/B * DB * D.
Application of fractional multiplication and related calculation methods
Application of 1 and fractional multiplication
Fractional multiplication is widely used and involves the solution of many practical problems. For example, when buying goods, we often need to calculate discounts and discount prices, which involves the calculation of fractional multiplication. In addition, fractional multiplication is also a common calculation method in proportion problems.
2. The relationship between fractional multiplication and fractional division
Fractional multiplication and fractional division are closely related. In fact, we can convert fractional division into component multiplication to calculate. For example, a/b ÷ c/d can be converted into a/b * d/c to solve, so that the calculation method of fractional multiplication can be directly used.
3. The relationship between fractional multiplication and fractional multiplication
In practical calculation, fractional multiplication can be transformed into fractional multiplication to solve. The way to convert fractions into decimals is to divide the numerator by the denominator to get a decimal value. Then, multiply the two decimals to get the result of decimal multiplication.