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用简便方法计算下面各题(1)7.8÷[32×(1X)+3.6...

(1)7.8÷[32×(1-58)+3.6]=7.8÷[32×38+3.6]=7.8÷[12+3.6]=7.8÷15.6=0.5;(2)20513-2.73-8.27+1713=(20513+1713)-(2.73+8.27)=22-11=11;(3)15×(115+117)×17=15×115×17+15×117×17=17+15=32;(4)4.3×1.8+86×0.91=43×0.18+43×2×0.91=43...

除法那部分先提取公因式 (8.1-5.4)÷3.6 = (0.9 x 9 - 0.9 x 6)÷ (0.9 x 4)= 0.9 x (9 - 6) ÷ (0.9 x 4)= 0.9 x (9 - 6) ÷ 0.9 ÷ 4= (9 - 6) ÷ 4= 0.75 (8.1-5.4)÷3.6+85.7= 0.75 + 85.7= 85 + 0.7 + 0.75= 85 + (0.7 + 0.75)= 85 + 1.45= ...

(1)[(5.1-3.6)÷0.8-1]×0.09=[1.5÷0.8-1]×0.09=[1.875-1]×0.09=0.875×0.09=0.07875(2)98.4×98+98.4×2=98.4×(98+2)=98.4×100=9840(3)30.1÷[(6.07+2.53)×0.7]=30.1÷[8.6×0.7]=30.1÷6.02=5(4)0.94×2.5+0.094×75=0.94×2.5+0.94×7.5=0.9...

(1)9.6-11÷7+17×4=9.6-117+47=9.6-(117-47)=9.6-1=8.6;(2)318×7.4-318+3.6×3.125=3.125×7.4-3.125+3.6×3.125=3.125×(7.4-1+3.6)=3.125×10=31.25.

(1)22.7×1.25×O.8,=22.7×(1.25×O.8),=22.7×1,=22.7;(2)3.91×2.8+6.09×2.8,=(3.91+6.09)×2.8,=10×2.8,=28;(3)9.83×(3.8-2.3)+1.5×6.17,=9.83×1.5+1.5×6.17,=(9.83+6.17)×1.5,=16×1.5,=24;(4)3.6×51+36×4.9,=3.6×51...

(7.2+1.08+3.6)÷0.36 =7.2÷0.36+1.08÷0.36+3.6÷0.36 =20+3+10 =23+10 =33 你好,本题已解答,如果满意 请点右下角“采纳答案”。

(1)7.8×9.8-14.5,=76.44-14.5,=61.94;(2)13.4+5.62+17.6+4.38,=(13.4+17.6)+(5.62+4.38),=31+10,=41;(3)3.6×42+4.2×64,=36×4.2+4.2×64,=4.2×(36+64),=4.2×100,=420;(4)4.8×12.5×0.8,=4.8×(12.5×0.8),=4.8×10,=48...

(1)1.36+4.85+2.64+6.15,=(1.36+2.64)+(4.85+6.15),=4+11,=15;(2)98.5÷2.5÷4,=98.5÷(2.5×4),=98.5÷10,=9.85;(3)5.4÷[2.5×(3.7-2.9)],=5.4÷[2.5×0.8],=5.4÷2,=2.7;(4)0.8×(4-3.68)÷0.01,=0.8×0.32÷0.01,=0.256÷...

3.6÷1.2 -0.8×2.7用简便方法计算 3.6÷1.2 -0.8×2.7 =3-2.16 =0.84

(1)8.54÷2.5÷0.4=8.54÷(2.5×0.4)=8.54÷1=8.54;(2)(9.37+9.37+9.37+9.37)×2.5=9.37×4×2.5=9.37×(4×2.5)=9.37×10=93.7;(3)3.6×10.1-0.36=3.6×10.1-3.6×0.1=3.6×(10.1-0.1)=3.6×10=36;(4)2.22×9.9+6.66×6.7=2.22×3×3.3+6.66×6.7...

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