简便运算:0.5*2.5*1.25*64还有请顺便出几道简便运算^_^

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简便运算:0.5*2.5*1.25*64还有请顺便出几道简便运算^_^
简便运算:0.5*2.5*1.25*64还有请顺便出几道简便运算^_^

简便运算:0.5*2.5*1.25*64还有请顺便出几道简便运算^_^
0.5*2.5*1.25*64
=0.5*2.5*1.25*2*4*8
=(0.5*2)*(2.5*4)*(1.25*8)
=1*10*10
=100
12.5*30+1.25*500
99*999
你能明白,赞同

0.5*2.5*1.25*64
=0.5*2*2.5*4*1.25*8
=1*10*10
=100

0.5×2.5×1.25×64
=0.5×2.5×1.25×2×4×8
=0.5×2×2.5×4×1.25×8
=1×10×10
=100