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86.2*10.1-8.62 =8.62*101-8.62 =8.62*100 =862
86.2x10.1-8.62=多少=86.2*10+86.2*0.1-8.62 =862+8.62-8.62 =862
86.2×10.1−8.62×0.1怎样简算?应该是86.2×10.1−86.2×0.1=86.2×10=862
8.62×9.9+86.2怎样简便计算?8.62×9.9+86.2 =8.62×(9.9+10)=8.62×19.9 =171.538
1.38*82.1+8.21*86.2简便计算亲,满意就采纳吧
下面两个脱式计算和上面中间的一个解方程怎么算?5x+26=221 5x=221-26 5x=195 x=39 2/3÷(1/2-1/6)×5/8 =2/3÷(3/6-1/6)×5/8 =2/3÷1/3×5/8 =2/3×3/1×5/8(约分)=5/4 1.38×4.5+86.2×0.4 =1.38*5*0.9+86.2*0.4 =6.9*0.9+860.2*0.4 =6.21+34.48 =40.69 ...
20克不纯的碳酸钾固体(其中杂质不溶水)放入86.2克水中,充分搅拌,是...0.44g 138/x=44/0.44g x=1.38g 1、所取10克滤液中溶质的质量分数是 1.38g/10g*100%=13.8g 不纯的碳酸钾固体中碳酸钾的质量 86.2g*1.38g/(10g-1.38g)=13.8g 2、不纯的碳酸钾固体中碳酸钾的质量分数 13.8g/20g*100%=69 ...
9.86×8.5+1.4×0.85简便运算?9.86×8.5+1.4×0.85简便运算步骤如下:9.86×8.5+1.4×0.85 =9.86×10×0.85+1.4×0.85 =98.6×0.85+1.4×0.85 =(98.6+1.4)×0.85 =100×0.85 =85 先凑合整数再相乘,这样就容易计算结果。
86.2*10.1-8.62 怎么简便运算 十万火急,86.2*10.1-8.62 =8.62*101-8.62 =8.62*100 =862
86.2*10.1-8.62 怎么简便运算 十万火急,86.2*10.1-8.62 =8.62*101-8.62 =8.62*100 =862