0.0938×6210-[210×0.006?8+(13.9×15.7+0.63×278-1.57×76)÷15]=________.
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解决时间 2021-12-29 09:33
- 提问者网友:临风不自傲
- 2021-12-28 11:05
0.0938×6210-[210×0.006?8+(13.9×15.7+0.63×278-1.57×76)÷15]=________.
最佳答案
- 五星知识达人网友:大漠
- 2021-12-28 12:10
562.8解析分析:按照有理数混合运算的顺序,先乘除后加减,有括号的先算括号里面的,计算过程中注意正负符号的变化.解答:方法(1)原式=0.0938×6210-[210×0.006?8+(218.23+175.14-119.32)÷15],
=0.0938×6210-[210×0.006?8+(218.23+175.14-119.32)÷15],
=0.0938×6210-(210×0.006?8+274.05÷15),
=0.0938×6210-(1.428+18.27),
=582.498-19.698,
=562.8.
方法(2)原式=0.0938×6210-[210×0.0068+(13.9×15.7-15.7×7.6+6.3×27.8)÷15]
=0.0938×6210-[210×0.0068+(6.3×15.7+6.3×27.8)÷15]
=0.0938×6210-[210×0.0068+6.3×43.5÷15]
=0.0938×6210-[2.1×0.68+2.1×8.7]
=9.38×62.1-2.1×9.38
=9.38×60
=562.8.点评:本题考查的是有理数的运算能力,运算较复杂,必须理清运算顺序方可正确运算.
=0.0938×6210-[210×0.006?8+(218.23+175.14-119.32)÷15],
=0.0938×6210-(210×0.006?8+274.05÷15),
=0.0938×6210-(1.428+18.27),
=582.498-19.698,
=562.8.
方法(2)原式=0.0938×6210-[210×0.0068+(13.9×15.7-15.7×7.6+6.3×27.8)÷15]
=0.0938×6210-[210×0.0068+(6.3×15.7+6.3×27.8)÷15]
=0.0938×6210-[210×0.0068+6.3×43.5÷15]
=0.0938×6210-[2.1×0.68+2.1×8.7]
=9.38×62.1-2.1×9.38
=9.38×60
=562.8.点评:本题考查的是有理数的运算能力,运算较复杂,必须理清运算顺序方可正确运算.
全部回答
- 1楼网友:平生事
- 2021-12-28 13:36
谢谢解答
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