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(0.72×0.4×0.35)÷(0.9×0.2×0.7)

(1)[1-328÷(328×2.5)]÷1.2=0.5,(2)66×666÷6666×66666=441480 76 101 ,(3)(0.72×0.4×0.35)÷(0.9×0.2×7)=0.08,(4)5 19 33 + 1 12 + 14 33 - 8 15 =5 11 20 .故答案为:0.5,444439812,0.08,5 11 20 .

对的. 因为除数缩小了100倍,而被除数缩小了10倍. 所以商扩大了10倍.

0.4×2-5%×=0.72 0.8-0.05x=0.72 -0.05x=0.72-0.8 -0.05x=-0.08 x=0.08÷0.05 x=1.6 希望帮到你 望采纳 谢谢 加油~

简便计算 0.72÷(0.74×2÷0.37) =0.72÷(0.74÷0.37x2) =0.72÷(2x2) =0.72÷4 =0.18

0.4×9.2+0.4×0.8 =0.4×(9.2+0.8) =0.4×10 =4 0.78×102 =0.78×(100+2) =0.78×100+0.78×2 =78+1.56 =79.56 0.5×0.28+0.5×0.72 =0.5×(0.28+0.72) =0.5×1 =0.5

0.747×8.2-7.47×0.72的简便运算 =7.47×(0.82-0.72) =7.47×0.1 =0.747

log0.72 0.4 =lg0.4/lg0.72 =(2lg2-1)/(3lg2+2lg3-2) =(2×0.3010-1)/(3×0.3010+2×0.4771-2) =-0.392/(-0.1428) ≈2.7451

(0.72X0.4X0.35)÷(0.9X0.2X7) =(0.72÷0.9)X(0.4÷0.2)X(0.35÷7) =0.8X2X0.05 =0.8X0.1 =0.08

(0.72*0.4*3.5)/(0.9*0.2*7) =(0.72÷0.9)×(0.4÷0.2)×(3.5÷7) =0.8×2×0.5 =0.8×(2×0.5) =0.8×1 =0.8

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