以下三道题该怎样巧算?要求过程。
3个回答
2016-10-10 · 学高端技术就来八维教育
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1847-64-136+628-1928
=1847-(64+136)-(1928-628)
=1847-200-1300
=347
4993+3996+5997+848
=5000-7+4000-4+6000-3+848
=(5000+4000+6000)+(848-7-4-3)
=15000+837
=15837
1348-234-131-424+1405-576+2234+1095-826-1074+1599-169-1048+2201
=(1348-1048)+(1405+1095)+(2234-234)-(131+169)-(424+576)+(1599+2201)-(576+826)
=300+2500+2000-300-1000+3800-1400
=(2500+2000+3800)+(300-300)-(1000-1400)
=8300-2400+0
=5900
=1847-(64+136)-(1928-628)
=1847-200-1300
=347
4993+3996+5997+848
=5000-7+4000-4+6000-3+848
=(5000+4000+6000)+(848-7-4-3)
=15000+837
=15837
1348-234-131-424+1405-576+2234+1095-826-1074+1599-169-1048+2201
=(1348-1048)+(1405+1095)+(2234-234)-(131+169)-(424+576)+(1599+2201)-(576+826)
=300+2500+2000-300-1000+3800-1400
=(2500+2000+3800)+(300-300)-(1000-1400)
=8300-2400+0
=5900
追问
还有第三题
追答
我刚刚把第三题加上了,希望帮我采纳哦
展开全部
1847-64-136+628-1928=1847-(64+136)+(628-1928)
=1847-200-1300
=347
4993+3996+5997+848=(5000-7)+(4000-4)+(6000-3)+848
=15000-14+848
=15000+834
=15834
1348-234-131-424+1405-576+2234+1095-826-1074+1599-169-1048+2201
=(1348-1048)+(2234-234)-(131+169)-(424+576)+(1405+1095)-(826+1074)+(1599+2201)
=300+2000-300-1000+2500-1900+3800
=5400
=1847-200-1300
=347
4993+3996+5997+848=(5000-7)+(4000-4)+(6000-3)+848
=15000-14+848
=15000+834
=15834
1348-234-131-424+1405-576+2234+1095-826-1074+1599-169-1048+2201
=(1348-1048)+(2234-234)-(131+169)-(424+576)+(1405+1095)-(826+1074)+(1599+2201)
=300+2000-300-1000+2500-1900+3800
=5400
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1847-(64+136)+(628-1928)=1647-1300=347
4993+5997+(3996+4+844)=10990+4000+844=14990+844=23844
1348-1048-(1074+826)-(131+169)-(424+576)+(1405+1095)+(2234-234)+(1599+2201)
=300-1900-300-1000+2500+2000+3800
=900+2500+2000+3800
=5600+3800
=9400
4993+5997+(3996+4+844)=10990+4000+844=14990+844=23844
1348-1048-(1074+826)-(131+169)-(424+576)+(1405+1095)+(2234-234)+(1599+2201)
=300-1900-300-1000+2500+2000+3800
=900+2500+2000+3800
=5600+3800
=9400
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