(2) The calculation result should be simplified to the simplest score.
Calculation method:
(1) Molecule is multiplied by Molecule, and the product is regarded as Molecule; The denominator is multiplied by the denominator, and the product is taken as the denominator;
(2) The calculation result should be simplified to the simplest score.
For simplicity, if the calculation process can be simplified, it can be simplified first and then calculated. (writing format: cross out the divisible numbers of the numerator and denominator, and write the divisible numbers above and below respectively. )
Extended data score calculation method:
1, which is the same as "rounding method" in integer operation. In decimal operation, four arithmetic laws and operation laws (such as commutative law, associative law and distributive law) are fully used to make partial sum, difference, product and quotient become integers and integer ten ... thus simplifying the operation.
2. In an expression with only addition and subtraction operations, add brackets to a part of the expression. If there is a plus sign in front of the brackets, the operation symbols in the brackets will not change; If there is a minus sign in front of the parentheses, the operation sign in the parentheses will change, that is, the plus sign will change to the minus sign, and the minus sign will change to the plus sign.
3. In the addition and subtraction formula with brackets, delete the brackets in the formula. If there is a plus sign in front of the bracket, the operation symbol in the bracket will remain unchanged after the bracket is removed; If there is a minus sign in front of the parentheses, the operation sign in the parentheses will change, that is, the plus sign will change to the minus sign, and the minus sign will change to the plus sign.