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列竖式计算(带☆要验算)52×60=321÷3=600÷5=☆47×32...

52×60=3120321÷3=107600÷5=120☆47×32=1504验算:☆840÷8=105验算:☆48×54=2592验算:

(1)32.5÷25=1.3.(2)42.14÷49=0.86(3)8.05÷35=0.23(4)600.3÷87=6.9(5)52.92÷63=0.84(6)0.023÷5=0.0046(7)1.12÷16=0.07(8)6÷30=0.2(9)15÷6=2.5

692×52=35984280×25=7000验算:503×23=11569405÷81=5864÷32=27验算:483÷23=21验算:

(1)54×52+54×32,=(52+32)×54,=4×54,=5;(2)13÷5+23×15,=13×15+23×15,=(13+23)×15,=1×15,=15;(3)(47+12)×28,=47×28+12×28,=16+14,=30;(4)[1?(37+514)]÷17,=[1-1114]×7,=314×7,=112.

(1)0.175÷0.25×4=0.7×4=2.8(2)27.52-(7.7-2.48)+32.7=27.52-7.7+2.48+32.7=(27.52+2.48)+(32.7-7.7)=30+25=55(3)3.2×(2.5+12.5)=3.2×2.5+3.2×12.5=0.8×(4×2.5)+0.4×(8×12.5)=0.8×10+0.4×100=8+40=48(4)6.8×3.7-3.7+37×0.42=...

(1)原式=-25-3×(9-6)+5=-25-9+5=-29;(2)原式=-9×49×49-(-43)×1=-169+43=-49;(3)原式=9×(-79)-6×(-32)×19+(-94+1)×(-8)=-7+1+10=4.

(1)-5+3-(-3)=-5+3+3=1;(2)?32+(?512)+52+(?712) =(-32+52)+(-512-712)=1-1=0;(3)0.9×(-4)÷(-6)=(-3.6)÷(-6)=0.6;(4)25?|?112|?(+214)?(?2.75) =25-1.5+0.5=25-1=-0.6;(5)(23?112?115)×(?60)=-23×60+112×60+115×60=...

(1)(0.69+0.35)×0.12,=1.04×0.12,=0.1248;(2)[32-(1.95-1.95)]÷1.6,=[32-0]÷1.6,=32÷1.6,=20;(3)15.52-1.6×5-5.7,=15.52-8-5.7,=7.52-5.7,=1.82;(4)4.8×12-4.8×2,=4.8×(12-2),=4.8×10,=48;(5)0.6×2.5×0.5×4,=(...

408-12×24 (46+28)×60 42×50-1715÷5 32+105÷5 (108+47)×52 420×(327-238) (4121+2389)÷7 671×15-974 469×12+1492 405×(3213-3189) 5000-56×23 125×(97-81) 6942+480÷3 304×32-154 20+80÷4-20= 100÷(32-30)×0= 25×4-12×5= 70×〔...

12. (380-80×4)÷6013. 20-16÷4+3×214....36. 47 × 59 + 37 × 9 37. 52 -( 32 +...49.5÷3= 153÷0= 462÷5= 374÷10= 73÷9...

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