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(8+0.4)×0.25脱式计算

(8+0.4)×0.25 =8×0.25+0.4×0.25 =2+0.1 =2.1

(1)0.8×0.25×4×0.5=(0.8×0.5)×(4×0.25)=0.4×1=0.4;(2)4.6×[3÷(1.45-1.05)]=4.6×[3÷0.4]=4.6×7.5=34.5;(3)55×9.9=55×(10-0.1)=55×10-55×0.1=550-5.5=544.5;(4)4.87×2.34+4.87×7.66=4.87×(2.34+7.66)=4.87×10=48.7.

(1)0.125×0.25×8×4=(0.25×4)×(0.125×8)=1×1=1;(2)54×(56-29 )=54×56-54×29=45-12=33;(3)35×13+35÷113=35×13+35×13=35×(13+13)=35×26=785;(4)8.05-0.75-14=8.05-0.75-0.25=8.05-(0.75+0.25)=8.05-1=7.05.

(1)96÷(15.4-12.2),=96÷3.2,=30;(2)9÷[0.3×(8-6.5)],=9÷[0.3×1.5],=9÷0.45,=20;(3)0.175÷0.25÷0.4,=0.175÷(0.25×0.4),=0.175÷0.1,=1.75;(4)0.175÷0.25×4,=0.7×4,=2.8;(5)0.36÷[(6.1-4.6)×0.8],=0.36÷[1.5×0.8]...

(1)0.125×0.25×8×4,=(0.125×8)×(0.25×4),=1×1,=1;(2)6.6×12+8×6.6,=6.6×(12+8),=6.6×20,=132;(3)[5-1.7÷(2-1)]×1,=[5-1.7÷1]×1,=[5-1.7]×1,=3.3×1,=3.3;(4)20×2.5÷(10×0.7+3),=20×2.5÷(7+3),=20×2.5÷10,=50...

(1.9×0.8+0.48)÷0.4 =(1.52+0.48)÷0.4 =2÷0.4 =5 你好,本题已解答,如果满意 请点右下角“采纳答案”。

(1)2.6×1.9÷2.6×1.9=(2.6÷2.6)×(1.9×1.9)=1×3.61=3.61(2)4.264÷(0.16×20.5)=4.264÷3.28=1.3(3)12×2.5+0.8×2.5=3×(4×2.5)+0.8×2.5=3×10+0.8×2.5=30+2=32(4)3.75÷0.25÷0.4=3.75÷(0.25×0.4)=3.75÷0.1=37.5(5)30-[5.5+18÷(5.2+...

(1)3.09×99+3.09=3.09×(99+1)=3.09×100=309;(2)0.125×0.25×4×0.8=(0.125×0.8)×(0.25×4)=0.1×1=0.1;(3)1.25×7+1.25=1.25×(7+1)=1.25×8=10;(4)1.25×101=1.25×(100+1)=1.25×100+1.25=125+1.25=126.25.

脱式计算能简算的要简算 0.25x32x12.5 =(0.25×4)×(8×12.5) =1×100 =100 2/5x68+0.4x32 =0.4×(68+32) =0.4×100 =40 14/5÷(14/5+7/10) =14/5÷7/2 =4/5 (2/3+4/15x5/6)÷10/21 =(2/3+2/9)÷10/21 =8/9÷10/21 =28/15 1-5/8÷25/28-3/10 =1-...

(1)720+280÷35×24=720+8×24=720+192=912;(2)9.88÷9.88+128×0-1÷169=1+0-1×915=1-35=25;(3)627?223×148+313÷59=627-83×128+103×95=627-4+6=827;(4)(0.3×4×1.25)÷(0.25×0.12)=[0.3×(4×1.25)]÷(0.25×0.4×0.3)=(0.3×5)÷(0.1×0...

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