1800÷[(15+10)×3] [510-(150+120)]÷16 15×[107-(35-18)] [175-(29+26)]×23 78+(64
1800÷[(15+10)×3][510-(150+120)]÷1615×[107-(35-18)][175-(29+26)]×2378+(64×8-320)(272-1...
1800÷[(15+10)×3] [510-(150+120)]÷16 15×[107-(35-18)] [175-(29+26)]×23 78+(64×8-320) (272-186)×(345-245) 14×[(860-260)÷15] 30÷[480÷(24-8)]
展开
1个回答
展开全部
(1)1800÷[(15+10)×3], =1800÷[25×3], =1800÷75, =24; (2)[510-(150+120)]÷16, =[510-270]÷16, =240÷16, =15; (3)15×[107-(35-18)], =15×[107-17], =15×90, =1350; (4)[175-(29+26)]×23, =[175-55]×23, =120×23, =2760; (5)78+(64×8-320), =78+(512-320), =78+192, =270; (6)(272-186)×(345-245), =86×100, =8600; (7)14×[(860-260)÷15〕], =14×[600÷15], =14×40, =560; (8)30÷[480÷(24-8)], =30÷[480÷16], =30÷30, =1. |
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询