(10-(0.2+6.3)÷0.7)×0.5简便计算?
【10-(0.2+6.3)÷0.7】×0.5
=【10-6.5÷0.7】×0.5
=【10-65/7】×0.5
=5/7×0.5
=5/14
[10-(0.2+6.3)÷0.7]×0.5
=(10-6.5÷0.7)×0.5
=(70/7-65/7)×0.5
=5/7×1/2
=5/14
=(10-(0.2÷0.7)+(6.3÷0.7))×0.5
=(10-(0.2÷0.7)+9)×0.5
=(19-(0.2÷0.7))×0.5
=19×0.5-0.2÷0.7×0.5
=9.5-0.2×0.5÷0.7
=9.5-0.1÷0.7
=9.5-1/7
=8.1
原式
=〔10-6.5÷0.7〕×0.5
=10×0.5一65/7×1/2
=5-65/14
=70/14-65/14
=5/14
直接计算,因为无法简化的,只能按照运算法则,依次计算,然后注意细节即可,因为涉及到乘除等,得算括号,再乘除加减。