(25Ⅹ125)Ⅹ(16Ⅹ4)简便方法?
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(25Ⅹ125)Ⅹ(16Ⅹ4)简便方法?
(25Ⅹ125)Ⅹ(16Ⅹ4)
=25x4x25x5x4x4
=25x4x25x4x5x4
=100x100x20
=10000x20
=200000
(25Ⅹ125)Ⅹ(16Ⅹ4)
=25x4x25x5x4x4
=25x4x25x4x5x4
=100x100x20
=10000x20
=200000
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25*4=100,125=25*5,16=4*4,
所以25*(25*5)*(4*4)*4=100*100*20=200000
所以25*(25*5)*(4*4)*4=100*100*20=200000
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(25Ⅹ125)Ⅹ(16Ⅹ4)
=25x4x25x5x4x4
=25x4x25x4x5x4
=100x100x20
=10000x20
=200000
=25x4x25x5x4x4
=25x4x25x4x5x4
=100x100x20
=10000x20
=200000
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(25Ⅹ125)Ⅹ(16Ⅹ4)
=(25x4)x(125x8x2)
=100x(1000x2)
=100x2000
=200000
=(25x4)x(125x8x2)
=100x(1000x2)
=100x2000
=200000
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