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2.5x3.2x12.5的简便计算

2.5*3.2*12.5=2.5*4*0.8*12.5=10*10=100

2.5x3.2x12.5=2.5x(0.4x8)x12.5=(2.5x0.4)x(8x12.5)=1X100=100

4*0.8*2.5*12.5

3.2 X 12.5= 320 X 0.125= 40 X 8 X 1/8= 40

4.8*2.5*12.5 =(0.6*2.5)*(8*12.5) =1.5*100 =150 你好,本题已解答,如果满意 请点右下角“采纳答案”.

=2.5x4x8x12.5=10x100=1000

=2.5x4x0.8x12.5=10x10=100

2.5x32x12.5简便法 2.5x32x12.5 =(2.5*4)*(12.5*8) =10*100 =1000

2.5x3.2x12.5=2.5x(0.4x8)x12.5=(2.5x0.4)x(8x12.5)=1X100=100

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