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计算 第一题: 2.35×13/3+(13/5-0.25)÷3/2 第二题:...

解: 2.35×13/3+(13/5-0.25)÷3/2 =30.55/3+47/30 =352.5/30=11.75

4.7+13.5×4 =4.7+54 =58.7

1=3.2+3.15/1.5=3.2+2.1=5.3 2=13.7*2=27.4 3=4*1.6=6.4 4=0.8*(13-8.37)=0.8*4.63=3.704

1。77/77*29.08=29.08 2.100*0.79+0.79*1=79.79 3.91-10/(0.25*0.4)=91-10/0.1=-9 4.402-298*(2.5*0.4)*(12.5*8)=-29398 5.7.8*(1/13+12/13)=7.8 望采纳,谢谢!

72*(2分之1-3分之1+0.25) =72*(1/2-1/3+1/4) =36-24+18 =30 49*(7分之2+5分之1)*25 =49*(2/7+1/5)*100/4 =49*17/35*100/4 =7*1700/20 =7*85 =600 13分之3*5分之4+13分之10/4分之 5-5分之4 =3/13*4/5+10/13*4/5-4/5 =4/5*(3/13+10/13-1) =4/...

12.5×32×0.25减13.65减2.35 =(12.5×8)×(4×0.25)-(13.65+2.35) =100×1-16 =100-16 =84

解:18.3×0.25+5.3÷0.4-7.13=4.575+5.3÷0.4-7.13=4.575+13.25-7.13=10.695答案是:10.695

(1)9.8×57-73,=7-213,=633-213,=423;(2)(5.5-2.7)×(13+12),=2.8×56,=73;(3)(43-15)÷(1÷0.25-14),=1715÷(1÷14-14),=1715÷(4-14),=1715÷154,=1715×415,=68225;(4)(165+117)×13+4÷17,=165×13+117×13+417,=15+...

0.25×3.2×12.5×13/40等于多少脱式计算 解: 0.25×3.2×12.5×13/40 =(0.25×4)×(0.8×12.5)×13/40 =1×10×13/40 =13/4

①8.4×0.26+0.74,=2.184+0.74,=2.924;②23.4÷7.8-2.1,=3-2.1,=0.9;③0.25×13.2×4,=(0.25×4)×13.2,=1×13.2,=13.2;④2.65×1.7+13.5×0.17,=2.65×1.7+1.35×1.7,=(2.65+1.35)×1.7,=4×1.7,=6.8;⑤0.78÷0.25×4,=3.12×4,=12.48;⑥0.8×...

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