来自李和平的问题
用简便方法计算18×25%+14×60+42×0.255.48+8.73+4.52+1.279.7÷1.25÷0.8．
用简便方法计算
18×25%+14×60+42×0.25
5.48+8.73+4.52+1.27
9.7÷1.25÷0.8．
1回答
2020-05-06 23:10
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刘书舟
（1）18×25%+14×60+42×0.25=18×14+14×60+42×14，=（18+60+42）×14，=120×14，=30；（2）5.48+8.73+4.52+1.27 =（5.48+4.52）+（8.72+1.27），=10+10，=20；（3）9.7÷1.25÷0.8=9.7÷（1.25×0.8），=9...
2020-05-06 23:11:17
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