如题所述
64Ⅹ25X125 简便运算?
64Ⅹ25X125
简便运算——
64Ⅹ25X125
=8x8x25x25x5
=8x25x8x25x5
=200x200x5
=200x1000
=200000
64Ⅹ25X125
简便运算——
64Ⅹ25X125
=8x8x25x25x5
=8x25x8x25x5
=200x200x5
=200x1000
=200000
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第1个回答 2021-06-24
分析:
通过把64拆分,变成能和25或125相乘得出整百整千等等的数。从而简化计算过程,降低了难度。(25x4=100, 125x8=1000, 64=8x4x2)
计算过程:
64Ⅹ25X125
=2x4x8x25x125
==2x(4x25)x8x125
=2x100x1000
=200 000
通过把64拆分,变成能和25或125相乘得出整百整千等等的数。从而简化计算过程,降低了难度。(25x4=100, 125x8=1000, 64=8x4x2)
计算过程:
64Ⅹ25X125
=2x4x8x25x125
==2x(4x25)x8x125
=2x100x1000
=200 000
第2个回答 2021-06-24
64Ⅹ25X125 简便运算?
=(8X8)x125
=1000x8
=8000
=8000X25
=8000X5x5
=200000
=(8X8)x125
=1000x8
=8000
=8000X25
=8000X5x5
=200000
第3个回答 2021-06-24
(125×8)×(25×8 )=1000×200 =200000
这就是这个算式的简便运算
这就是这个算式的简便运算
第4个回答 2021-06-24
因为125×8=1000,25×4=100,所以把64分解成4×8×2:64×5×125=4×8×2×125=(4×25)×(125×8)×2=100×1000×2=200000