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脱式计算,能简算的要简算.99×0.625+0.625 ...

(1)99×0.625+0.625=(99+1)×0.625=100×0.625=62.5;(2)88×125=11×8×125=11×(8×125)=11×1000=11000;(3)72×125=9×8×125=9×(8×125)=9×1000=9000;(4)250×13×4=(250×4)×13=1000×13=13000.

(1)99×0.625+0.625,=(99+1)×0.625,=100×0.625,=62.5;(2)(53.76-17.49)÷1.8,=36.27÷1.8,=20.15;(3)(0.8×7+4.56÷1.9)×12.5,=(5.6+2.4)×12.5,=8×12.5,=100;(4)15.73-(2.17+0.73)-1.83,=15.73-2.17-0.73-1.83,=(15....

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6.25*0.23+17.7*0.625 =6.25*0.23+1.77*6.25 =6.25*(0.23+1.77) =6.25*2 =12.5

1、用竖式计算 0.396÷1.2= 0.756÷0.36= 15.6×13= 0.18×15= 0.025×14= 3.06×36= 0.04×0.12= 3.84×2.6≈ 5.76×3= (保留一位小数) 7.15×22 90.75÷3.3 3.68×0.25 16.9÷0.13 1.55÷3.9 3.7×0.016 13.76×0.8= 5.2×0.6 8.4×1.3 6.4×0.5 4.48×0.4 5.25...

(1)2.64×1.7-2.64×0.7 =2.64×(1.7-0.7) =2.64×1 =2.64 (2)31.5×1.07-3.15×0.7 =3.15×10.7-3.15×0.7 =3.15×(10.7-0.7) =3.15×10 =31.5 (3)2.7×5.7-2.7+5.3×2.7 =2.7×(5.7-1+5.3) =2.7×10 =27 (4)0.625÷0.125×0.8 =(0.625×0.8)×8÷...

0.35×1.6+0.35×3.4 6.72-3.28-1.72 0.45+6.37+4.55 5.4+6.9×3-(25-2.5)2×41846-620-380 4.8×46+4.8×54 0.8+0.8×2.5 1.25×3.6×8×2.5-12.5×2.4 28×12.5-12.5×20 23.65-(3.07+3.65) (4+0.4×0.25)8×7×1.25 1.65×99+1.65 27.85-(7.85+3.4) 48...

8、在,,,0.625五个数中,最大的数是( ),最小的数是( ),( )和( )相等...3、脱式计算,能简算的要简算(9分,每小题3分)4、解方程(9分,每小题3分...

脱式计算 4乘8分之5加62.5%乘7减0.625 =4x0.625+0.625x7-0.625 =(4+7-1)x0.625 =10x0.625 =6.25

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