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17.5÷1.25÷0.08脱式计算

96,5÷1,25÷8 =96,5÷(1,25×8) =96,5÷10 =9,65

=400÷1.25x8÷8 = =400÷10x8 =320

(1)1.25×(80+0.8),=1.25×80+1.25×0.8,=100+1,=101;(2)4.2×7.8+2.2×4.2,=4.2×(7.8+2.2),=4.2×10,=42;(3)4×6.33×0.5,=2×6.33,=12.66;(4)20.9+10.5÷(5.2-3.7),=20.9+10.5÷1.5,=20.9+7,=27.9;(5)21÷0.25÷0.4,=21÷...

①1.258×18.5-0.258×18.5,=18.5×(1.258-0.258),=18.5×1,=18.5;②8.48÷0.8×0.9,=10.6×0.9,=9.54;③1.25×2.4,=1.25×8×0.3,=10×0.3,=3;④5.85÷(1.3+0.5)×6,=5.85÷1.8×6,=3.25×6,=19.5.

2.5×3.2×1.25 =(2.5×0.4)×(8×1.25) =10×10 =100

(1)6.8×0.75÷0.5=5.1÷0.5=10.2(2)0.94÷1.25÷0.8=0.94÷(1.25×0.8)=0.94÷1=0.94(3)0.5×4÷0.5×4=(0.5÷0.5)×(4×4)=1×16=16(4)29.4÷7+3.6=4.2+3.6=7.8(5)(7.5-2.3×0.4)÷0.01=(7.5-0.92)÷0.01=6.58÷0.01=658(6)9÷[0.3×(8-6.5)...

7.8÷2.6×1.25 =3×1.25 =3.75

(1)19.8×0.54÷0.081=10.692÷0.081=132;(2)0.25×0.32×1.25=0.25×(0.4×0.8)×1.25=(0.25×0.4)×(0.8×1.25)=0.1×0.1=0.01;(3)1.89+8.11×2.5=1.89+20.275=22.165;(4)0.25×201-0.25=0.25×(201-1)=0.25×200=50;(5)8.7×0.99=8.7×(...

(1)19.8×0.54÷0.081,=10.692÷0.081,=132;(2)0.25×32×1.25,=0.25×(4×8)×1.25,=(0.25×4)×(1.25×8),=1×10,=10;(3)1.89÷0.54-7.1÷2.5,=3.5-2.84,=0.66;(4)0.25×26×40,=0.25×40×26,=10×26,=260;(5)8.7×99,=8.7×(100...

(1)7.8÷1.25÷8=7.8÷(1.25×8)=7.8÷10=0.78(2)0.67×99+0.67=0.67×(99+1)=0.67×100=67(3)3.76×2.9-1.9×3.76=3.76×(2.9-1.9)=3.76×1=3.76(4)2.5×3.2×1.25=(2.5×4)×(0.8×1.25)=10×1=10(5)0.38+9.62÷3.7×5.2=0.38+2.6×5.2=0.38+13...

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