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12.5x0.64x2.5简便计算脱式计算

12.5x0.4x0.25x0.8用脱式计算 =(12.5x0.8)x(0.4x0.25) =10x0.1 =1

解: 16.5x0.25-12.5x0.25 ( 提取公因数)=(16.5-12.5)x0.25=4x0.25=1

0.8×74.5×12.5 =0.8×12.5×74.5 =10×74.5 =745

4x0.8x12.5x2.5 =(4×2.5)×(0.8×12.5) =10×10 =100

109×100-5×100-400 =100×100+9×100-(500+400) =10000

18·09一7·5X(0·14十1·06) =18.09-7.5×1.2 =18.09-9 =9.09 你好,本题以解答,如果满意,请点右上角“采纳答案”,支持一下。

5×375×20=5×20×375=37500

3.65x4.7-36.5x0.37 =36.5x0.47-36.5x0.37 =36.5x(0.47-0.37) =3.65 希望帮到了你,请采纳哦

4/5x4+2/5x2+1/5x16 =4/5x4+1/5x(4+16) =4/5x4+4 =4x(4/5+1) =36/5=7.2

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