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1.2乘(2.5除2.4)乘4.8简便计算

1.2×(2.5÷2.4)×4.8 =1.2×2.5÷2.4×4.8 =1.2×2.5×(4.8÷2.4) =1.2×2.5×2 =1.2×(2.5×2) =1.2×5 =6

1.2乘(2.5除2.4)乘4.8+0.8乘5 = (1.2乘2.5)乘(4.8除2.4)+0.8乘5 = 3乘2 + 4 = 6 + 4 = 10

1.2×3.8+2.4×1.9+4.8×0.6 =1.2×2×1.9+2.4×1.9+4.8×0.6 =2.4×1.9+2.4×1.9+4.8×0.6 =4.8×1.9+4.8×0.6 =4.8×2.5 =1.2×4×2.5 =1.2×10 =12.

8.8乘1.2加24乘2.4加6.6乘4.8 =8.8X1.2+48X1.2+6.6X4.8 =1.2X(8.8+48+26.4) =1.2X83.2 =83.2+83.2X0.2 =83.2+16.4 =99.84

1.2*3/5=6/5*3/5=18/25 2.5*3/5=5/2*3/5=3/2 1.4*5/6=7/5*5/6=7/6 2.4*5/6=12/5*5/6=2 分数乘法是一种数学运算方法。分数的分子与分子相乘,分母与分母相乘,能约分的要先约分,分子能不能和分母乘。 做第一步时,就要想一个数的分子和另一个数...

1.2*3.6+2.4*2+4.8*0.6 =1.2x4x0.9+4.8+4.8x0.6 =4.8x(0.9+1+0.6) =4.8x2.5 =1.2x(4x2.5) =1.2x10 =12 行家正解,不明白可以追问!祝您学习进步 满意请点击下面的【选为满意回答】按钮,O(∩_∩)O谢谢

1.2÷2.4+3.6÷2.4 =(1.2+3.6)÷2.4 =4.8÷2.4 =2

(3.6乘0.75乘1.2)除以(1.5乘2.4乘0.18) =(3.6x0.75x1.2)/(1.5x2.4x0.18) =(3.6x0.75)/(1.5x2x0.18) =(20x0.75)/(1.5x2) =(10x0.75)/1.5 =10x0.05 =0.5

36*4.2*2.4/(1.8*0.6*1.2) = (36÷1.8) × (4.2÷0.6) × (2.4÷1.2) = 20×7×2 =280

1.2÷2.4x(0.9÷1.2) =1.2÷1.2x(0.9÷2.4) =0.9÷2.4 =3/8

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