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8.09乘以270竖式计算

2184.3

0.04*270=10.8

160*270的算式竖式计算160*270=43200 验算43200÷160=270

25.888

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0.206乘以0.58竖式计算0.206乘以0.58=0.11948 验算0.11948÷0.58=0.206

40*207=8280

20.8 * 110 = 2288 竖式见图:

解:1.21*0.81=(1+0.21)*0.81=0.81+0.21*0.81=0.81+0.1701=0.9801 答案是:0.9801

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