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[1.8%(1÷75%+1/3)]×1又5/8脱式计算.(能简算的要简算)

=1/5+(4/5)*(75/16)*(8/25) =1/5+(4/5)*(3/2)*1 =1/5+6/5 =7/5

8分之3乘4分之3+8分之5乘75% =3/8*3/4+5/8*75/100 =9/32+15/32 =24/32 =3/4 (1+25%)除(1-25%) =125/100*100/75 =5/3 5除3分之4+3分之1 =5*3/4+1/3 =15/4+1/3 =45/12+4/12 =49/12

(1)(13+216?512)×12=13×12+136×12-512×12,=4+26-5,=25;(2)[47?(18.75?1÷815)×2625]÷0.46=[47-(18.75-158)×5625]÷0.46,=[47-(18.75×5625-1.875×5625)]÷0.46,=[47-(42-4.2)]÷0.46,=[47-37.8]÷0.46,=9.2÷0.46,=20;(3)75%×1.37...

(1)7.5×2.3+1.9×2.5=17.25+4.75=22;(2)(78.6-0.786×25十75%×21.4)×2011÷75,=(78.6-78.6×0.25+75%×21.4)×2011÷75,=[(1-0.25)×78.6+0.75×21.4]×2011÷75,=[0.75×78.6+0.75×21.4]×2011÷75,=(78.6+21.4)×0.75×2011÷75,=100×0.75×2...

①2009×97.75+4018×1.125,=2009×97.75+2009×2×1.125,=2009×(97.75+2.25),=2009×100,=200900;②4.02×8.1× 3 5 ÷(0.6×0.81),=4.02×8.1×0.6÷0.6÷0.81,=4.02×(8.1÷0.81)×(0.6÷0.6),=4.02×10×1,=40.2;③9999×8888÷6666,=9999×8×1111...

(1)(66-32×1.2)÷0.25,=(66-38.4)÷0.25,=27.6÷0.25,=110.4,(2)10×34+17×75%-7×0.75,=10×0.75+17×0.75-7×0.75,=(10+17-7)×0.75,=20×0.75,=15,(3)0.25×[515×(3-2.5×78)],=0.25×[515×(3-3516)],=0.25×[515×1316],=14×26...

您好: 1÷(1-75%) =1÷25% =4 200×(1+20%) =200x1.2 =240 75%×7分之5×3分之4 =3/4x4/3x5/7 =1x5/7 =5/7 0.8×99+0.8 =0.8x(99+1) =0.8x100 =80 不明白,可以追问 如有帮助,记得采纳,谢谢 祝学习进步!

(1)8/9×[7/8-(7/16-1/8)](2)10×3/4+17×75%-7×0. =8/9×[7/8-7/16+1/8] =8/9×[7/8+1/8-7/16] =8/9×[1-7/16] =8/9×9/16 =1/2 (2)10×3/4+17×75%-7×0.75 [3/4=75%=0.75] =0.75×(10+17-7) =0.75×20 =15

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