用递等式计算,能简便的简便计算:7.28-(1.28+0.25)0.64×6.4-O.64×5.426.18-(48.6÷18)×3.5 9.

用递等式计算,能简便的简便计算:7.28-(1.28+0.25)0.64×6.4-O.64×5.426.18-(48.6÷18)×3.5 9.4×[O.96÷(5.4÷0.9)].

(1)7.28-(1.28+0.25),
=7.28-1.28-0.25,
=6-0.25,
=5.75;

(2)0.64×6.4-O.64×5.4,
=0.64×(6.4-5.4),
=0.64×1,
=0.64;

(3)26.18-(48.6÷18)×3.5,
=26.18-2.7×3.5,
=26.18-9.45,
=16.73;

(4)9.4×[O.96÷(5.4÷0.9)],
=9.4×[0.96÷6],
=9.4×0.16,
=1.504.

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用递等式计算,能简便的简便计算:7.28-(1.28+0.25)0.64×6.4-O.64×...
(1)7.28-(1.28+0.25),=7.28-1.28-0.25,=6-0.25,=5.75;(2)0.64×6.4-O.64×5.4,=0.64×(6.4-5.4),=0.64×1,=0.64;(3)26.18-(48.6÷18)×3.5,=26.18-2.7×3.5,=26.18-9.45,=16.73;(4)9.4×[O.96÷(5.4÷0.9)],=...

7.28减(1.28加0.25)怎么简便计算
7.28-(1.28+0.25)=7.28-1.28-0.25=6-0.25=5.75

简便运算7.28-(1.28+0.25)
7.28-(1.28+0.25)=7.28-1.28-0.25 =6-0.25 =5.75

能简算的要简算7.28-(1.28+0.25)2.25×4.8+77.5×0.488×4×12.5×0...
(1)7.28-(1.28+0.25)=7.28-1.28-0.25=6-0.25=5.75;(2)2.25×4.8+77.5×0.48=2.25×10×0.48+77.5×0.48=22.5×0.48+77.5×0.48=(22.5+77.5)×0.48=100×0.48=48;(3)8×4×12.5×0.25 =(8×12.5)×(4×0.25)=100×1=100;(4)...

7.28×(1.28+0.25)的简便运算怎么做
=7.28X1.53 =7.28X(1+0.5+0.03)=7.28+7.28X0.5+7.28X0.03 =7.28+3.64+0.2184 =11.1384

7.28÷4×0.25有简便运算?
7.28÷4×0.25 =1.82×1/4 =0.455

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