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脱式计算,(能简算的要简算) 5.44÷1.25÷0

5.44÷(1.25×0.8)=5.44÷1 0.4÷0.4×5×5=25 第二个没有简便方法

(1)17.4÷0.8÷1.25,=17.4÷(0.8×1.25),=17.4÷1,=17.4;(2)1.8÷0.2÷0.3,=1.8÷(0.2×0.3),=1.8÷0.06,=30;(3)24÷O.6+0.6÷24,=40+0.025,=40.025;(4)17.94÷3.9+5.3×0.4,=4.6+0.12,=4.72.

(1)13÷0.4÷2.5,=13÷(0.4×2.5),=13÷1,=13;(2)64×4.5+36×4.5,=(64+36)×4.5,=100×4.5,=450;(3)1.25×2.5×0.8,=1.25×0.8×2.5,=1×2.5,=2.5;(4)1.5×101-1.5,=1.5×(101-1),=1.5×100,=150;(5)14.64+3.7×2.8,=14.64+10....

(1)4.85×1.25×8 =4.85×(1.25×8)=4.85×10=48.5(2)6.8÷[(4.5-2.8)×0.4]=6.8÷[1.7×0.4]=6.8÷0.68=10(3)39÷0.125÷0.8=39÷(0.125×0.8)=39÷0.1=390 (4)4.8×0.65+0.65×5.2=0.65×(4.8+5.2)=0.65×10=6.5

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.

(1)250×16-48048÷24,=4000-2002,=1998;(2)18÷1.5-0.5×0.3,=12-0.15,=11.85;(3)25×1.25×32,=25×1.25×4×8,=(25×4)×(1.25×8),=100×10,=1000;(4)5.58- 3 5 +5.42- 2 5 ,=(5.58+5.42)-( 3 5 + 2 5 ),=11-1,=10;(5)...

(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...

(1)7.6×40.3÷(76×0.8)÷1.25,=7.6×40.3÷76÷0.8÷1.25,=7.6÷76÷(0.8×1.25)×40.3,=0.1×40.3,=4.03;(2) 5 1 5 ÷0.65- 1 5 7 ×0.875,=5.2÷0.65- 12 7 × 7 8 ,=8- 3 2 ,= 13 2 ;(3)(8.6- 7 4 7 )÷ 2 6 7 +7.64,=(8 3 5 - 7 4 7...

(1)0.89×4.8+0.89×5.2=0.89×(4.8+5.2)=0.89×10=8.9;(2)9.4×0.96÷(5.4÷0.9)=9.4×0.96÷6=9.024÷6=1.504;(3)(8+0.8)×1.25=8×1.25+0.8×1.25=10+1=11;(4)0.175÷0.25÷0.4=0.175÷(0.25×0.4)=0.175÷0.1=1.75.

①85×54÷18+745,=4590÷18+745,=255+745,=1000;②3.4÷[(1.25+0.45)×2],=3.4÷[1.7×2],=3.4÷3.4,=1;③1080+270÷18-864,=1080+15-864,=1095-864,=231;④7.54+127+2.46+167,=(7.54+2.46)+(127+167),=10+4,=14;⑤(2.4-2320)÷0.625+...

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