简算(过程)3.48-1.79= 2273-665-348= 599996+49997+3998+407+89=100+
来源:学生作业帮 编辑:搜狗做题网作业帮 分类:综合作业 时间:2024/08/01 02:15:32
简算(过程)
3.48-1.79= 2273-665-348= 599996+49997+3998+407+89=
100+99-98-97+96+95-94-93+.+8+7-6-5+4+3-2-1=
3.48-1.79= 2273-665-348= 599996+49997+3998+407+89=
100+99-98-97+96+95-94-93+.+8+7-6-5+4+3-2-1=
![简算(过程)3.48-1.79= 2273-665-348= 599996+49997+3998+407+89=100+](/uploads/image/z/16868655-63-5.jpg?t=%E7%AE%80%E7%AE%97%EF%BC%88%E8%BF%87%E7%A8%8B%EF%BC%893.48-1.79%3D+2273-665-348%3D+599996%2B49997%2B3998%2B407%2B89%3D100%2B)
100+99-98-97+96+95-94-93+.+8+7-6-5+4+3-2-1=(100-98)+(99-97)+(96-94)+(95-93)+.+(8-6)+(7-5)+(4-2)+(3-1)=2*50=100
3.48-1.79=3.5-0.02-1.8+0.01=1.69
2273-665-348=2270+3-660-5-350+2=1260
599996+49997+3998+407+89=600000-4+50000-3+4000-2+400+7+90-1=654487
3.48-1.79=3.5-0.02-1.8+0.01=1.69
2273-665-348=2270+3-660-5-350+2=1260
599996+49997+3998+407+89=600000-4+50000-3+4000-2+400+7+90-1=654487