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脱式计算,能简算的要简算. 0.25×0.125×32

解:0.25x32×0.125 =0.25x(4x8)×0.125 =(0.25x4)x(8×0.125) =1x1 =1

①2013×0.25+2013×0.75=2013×(0.25+0.75)=2013×1=2013;②1.25×32×0.25=1.25×(8×4)×0.25=(1.25×8)×(4×0.25)=10×1=10;③12×( 5 6 + 1 2 - 1 3 )=12× 5 6 +12× 1 2 -12× 1 3 )=10+6-4=16-4=12;④ 2 3 +( 5 6 - 3 4 )÷ 3 8 = 2 3 + 1 1...

(1)0.25×32×0.125=(0.25×4)×(8×0.125)=1×1=1(2)57×18.5-4.5÷75=57×18.5-4.5×57=57×(18.5-4.5)=57×14=10(3)18+57+6.875+27=(18+6.875)+(57+27)=(0.125+6.875)+1=7+1=8(4)4397×99=4397×(97+2)=4397×97+2×4397=43+8697=438697

(1)0.7×101-0.7,=0.7×(101-1),=0.7×100,=70;(2)0.125×4.7×8,=(0.125×8)×4.7,=1×4.7,=4.7;(3)12.5-1.68-2.32,=12.5-(1.68+2.32),=12.5-4,=8.5;(4)567÷20÷5,=567÷(20×5),=567÷100,=5.67.

= (1/4) x 32 x (100/8) = 8 x 100 / 8 = 100

(0.125×8-0.5)×4 =(1-0.5)*4=0.5*4=2 105×8.6-8.6×4-8.6=(105-4-1)*8.6=100*8.6=860 1.8+18÷1.5-0.5×0.3 =1.8+12-0.15=13.65 (0.62+7.638÷0.1)÷0.25=(0.62+76.38)/0.25=77/0.25=308

(1)310+4.25+3.7+134=310+3.7+4.25+134=(310+3.7)+(4.25+134)=4+6=10;(2)0.125×3.2×25=0.125×8×0.4×25=(0.125×8)×(0.4×25)=1×10=10;(3)17×44+54×17=17×(44+54)=17×98=14;(4)7.8÷〔32×(1-58)+3.6〕=7.8÷〔32×38+3.6〕=7.8...

(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)(66-32×1.2)÷0.25,=(66-38.4)÷0.25,=27.6÷0.25,=110.4,(2)10×34+17×75%-7×0.75,=10×0.75+17×0.75-7×0.75,=(10+17-7)×0.75,=20×0.75,=15,(3)0.25×[515×(3-2.5×78)],=0.25×[515×(3-3516)],=0.25×[515×1316],=14×26...

(1)1020+270÷18-864,=1020+15-864,=171;(2)23÷0.8×34,=23÷45×34,=23×54×34,=58;(3)18+57+6.875+27,=(18+6.875)+(57+27),=(0.125+6.875)+1,=7+1,=8;(4)0.25×64×125%,=0.25×4×2×8×1.25,=(0.25×4)×(8×1.25)×2,=1×...

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