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有理数的混合运算是有理数的重点和难点,要想提高运算速度和准确率,需要把握以下几点.一、运算法则要熟练有理数的运算包括加、减、乘、除和乘方五种运算,熟练掌握各种运算法则,是正确进行有理数运算的重要保证.请大家回忆一下这几种运算的运算法则,看看自己能否准确说出来.二、运算顺序要明确有理数混合运算的顺序是:先算乘方,再算乘除,最后算加减,如果有括号,先做括号里面的运算.
Rational number of mixed operations is a rational number of the key and difficult, in order to improve the speed and accuracy of computing, you need to grasp the following points: First, the algorithm must be rational rational number of operations, including add, subtract, multiply, divide and power five operations, Proficiency in a variety of algorithms, is an important guarantee for correct rational number operation.Please recall the algorithm of these types of computing, to see if they can accurately say.Second, the order of operations to be clear Rational number The order of the hybrid operation is: Count the power first, then multiply and divide, and finally add and subtract, if there are brackets, do the parentheses inside the first operation.