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8.1÷0.4+0.5的和乘以0.6脱式计算和简便算法

(8.1÷0.4+0.5)×0.6 =(8÷0.4+0.1÷0.4+0.5)×0.6 =(20+0.25+0.5)×0.6 =20×0.6+0.25×0.6+0.5×0.6 =12+0.15+0.3 =12.45

5.64÷0.4+0.6×1.8 =14.1+1.08 =15.18

(1.05+0.5)÷0.4 =1.55÷0.4 =15.5÷4 =3.875

1.46×5+12.8÷0.4×7.5 =1.46×5+3.2×7.5 =1.46x5+3.2x1.5x5 =1.46x5+4.8x5 =(1.46+4.8)x5 =6.26x5 =31.3 希望帮到你 望采纳 谢谢 加油

(1)6.8×0.75÷0.5=5.1÷0.5=10.2(2)0.94÷1.25÷0.8=0.94÷(1.25×0.8)=0.94÷1=0.94(3)0.5×4÷0.5×4=(0.5÷0.5)×(4×4)=1×16=16(4)29.4÷7+3.6=4.2+3.6=7.8(5)(7.5-2.3×0.4)÷0.01=(7.5-0.92)÷0.01=6.58÷0.01=658(6)9÷[0.3×(8-6.5)...

6.8×0.75÷0.5,=5.1÷0.5,=10.2,13.75÷0.125-2.75,=110-2.75,=107.25,1.53+23.4÷7.2,=1.53+3.25,=4.78.

2.1×0.5÷4.2的脱式计算 =(2.1/4.2)×0.5 =1/2×0.5 =1/2×1/2 =1/4

1.120-36×4÷18+35 2.(58+37)÷(64-9×5) 3.(6.8-6.8×0.55)÷8.5 4.0.12× 4.8÷0.12×4.8 5.(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6 6.6-1.6÷4= 5.38+7.85-5.37= 7.7.2÷0.8-1.2×5= 6-1.19×3-0.43= 8.6.5×(4.8-1.2×4)= 0.68×1.9+0.32×1.9 ...

36除以0.4加1.25乘5用脱式的简便算法如何算出 36除以0.4加1.25乘5 =36÷0.4+1.25*5 =90+6.25 =96.25 直接计算

(8-9╱4÷1╱3)×9╱5脱式计算 =8*9/5-9/4*3*9/5 =72/5-243/20 =(72*4)/(5*4)-243/20 =288/20-243/20 =45/20 =2.25

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