The first step is to deal with the part in brackets. The order of calculation in brackets is to multiply and divide in brackets first, and then multiply and divide outside brackets. For example, if we want to calculate (2/3)×(3/4), we need to calculate the multiplication results of 2/3 and 3/4 fractions, and then multiply this result with the multiplier outside the brackets.

The second step is to deal with the part outside the brackets. The calculation outside brackets only needs to be carried out according to the common calculation rules of multiplication and division. For example, (2/3)×(3/4) above, we have got the calculation result in brackets, and then we just need to multiply this result by the multiplier outside brackets.

When dealing with the method of fractional multiplication and division with brackets, we need to deal with the part in brackets first, and then deal with the part outside brackets. This is because in mathematics, we follow the order of "dealing with brackets first, then with brackets, and finally with braces".

Fractional multiplication is a mathematical operation method. The numerator of the fraction is multiplied by the numerator and the denominator is multiplied by the denominator. If you can subtract, you must subtract first, and the numerator cannot be multiplied by the denominator. When doing the first step, we should think about whether the numerator of one number and the denominator of another number can be reduced. (except 0).

Multiplying a fraction by an integer is to add up multiple identical numbers, for example? X 2, that is, two? Add it up? × 10 means 10? Add it up. If the integer is multiplied by the fraction: the integer is multiplied by the numerator, not the denominator (both integer and denominator can subtract a fraction). Here, multiplying a number by a fraction means finding a fraction of this number.

Matters needing attention in the calculation method of fractional multiplication with brackets

The fractions in 1. brackets must be simplified before multiplication.

2. If there is a score in brackets, it needs to be converted into a false score before calculation.

3. In the calculation process, if you encounter fractions with different denominators, you need to divide them so that the denominators of each fraction are the same, and then multiply them.

4. After the calculation is completed, it is necessary to check whether there are problems such as symbol errors or calculation errors to ensure the accuracy of the results.