求10.89*10.69-108.9*0.025-1.089*4.4 306*51/17 0.035*935+0.35*
来源:学生作业帮 编辑:搜搜考试网作业帮 分类:数学作业 时间:2024/08/18 04:07:51
求10.89*10.69-108.9*0.025-1.089*4.4 306*51/17 0.035*935+0.35*0.3+0.035+0.7*6.1*0.5的简便方法
![求10.89*10.69-108.9*0.025-1.089*4.4 306*51/17 0.035*935+0.35*](/uploads/image/z/14154479-71-9.jpg?t=%E6%B1%8210.89%2A10.69-108.9%2A0.025-1.089%2A4.4+306%2A51%2F17+0.035%2A935%2B0.35%2A)
10.89*10.69-108.9*0.025-1.089*4.4 =1.089*106.9-1.089*2.5-1.089*4.4 =1.089*(106.9-2.5-4.4) =1.089*100 =108.9; 306*51/17=306*3=918; 0.035*935+0.35*0.3+0.035+0.7*6.1*0.5 =3.5*9.35+3.5*0.03+3.5*0.01+3.5*0.61 =3.5*(9.35+0.03+0.01+0.61) =3.5*10 =35 .亲,请您点击【采纳答案】,您的采纳是我答题的动力,如果不明白,补充:10.89*10.69-108.9*0.025-1.089*4.4 =1.089*106.9-1.089*2.5-1.089*4.4 =1.089*(106.9-2.5-4.4) =1.089*100 =108.9; 306*51/17 =306*3 =918; 0.035*935+0.35*0.3+0.035+0.7*6.1*0.5 =3.5*9.35+3.5*0.03+3.5*0.01+3.5*0.61 =3.5*(9.35+0.03+0.01+0.61) =3.5*10 =35 .这个看得清楚,答案如果满意,