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脱式计算,(能简算的要简算) 5.44÷1.25÷0

(1)1.25×3.69×8,=(1.25×8)×3.69,=10×3.69,=36.9;(2)32.4÷2.5÷0.4=32.4÷(2.5×0.4),=32.4÷1,=32.4;(3)8.3-2.76×1.5,=8.3-4.14,=4.16;(4)47.88÷6.3×8.2,=7.6×8.2,=62.32.

(1)25×7.6×0.8,=(25×0.8)×7.6,=20×7.6,=152;(2)23.7-3.9+6.3-6.1,=(23.7+6.3)-(3.9+6.1),=30-10,=20;(3)2.5×64×1.25,=2.5×(4×8×2)×1.25,=(2.5×4)×(1.25×8)×2,=10×10×2,=200;(4)1÷(1-0.98),=1÷0.02,=50;(...

(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...

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.

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+...

(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.

=400÷1.25x8÷8 = =400÷10x8 =320

(1)817+278÷4,=817+69.5,=886.5;(2)45×9.8,=45×(10-0.2),=45×10-45×0.2,=450-9,=441;(3)5.4×2.8-7.63,=15.12-7.63,=7.49;(4)4.5+(2-0.75)×6,=4.5+(2×6-0.75×6),=4.5+(12-4.5),=4.5-4.5+6,=0+6,=6;(5)1.25×2....

照片

(1)808×1.25,=(800+8)×1.25,=800×1.25+8×1.25,=1000+10,=1010;(2)8.6×[1÷(12.1-12.09)],=8.6×[1÷0.01],=8.6×100,=860;(3)815+(47?12)×1425,=815+114×1425,=815+125,=4375;(4)912×3.8+15×9.5,=912×(3.8+0.2),=912...

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