638×9932×16+14×32的简便运算怎么办?
2个回答
展开全部
638×9932×16+14×32
=319x2x9932x16 +14x32
=32x(319x9932+14)
=32x[(320-1)x(10000-60-8)+14]
=32x[3200000-10000-19200+60-2560+8+14]
= 32x[3200000-29200-2560+82]
=32x(3200000-31760+82)
=32x(3168240+82)
=32x3168322
=(30+2)x 3168322
=95049660+6336644
=101386304
=319x2x9932x16 +14x32
=32x(319x9932+14)
=32x[(320-1)x(10000-60-8)+14]
=32x[3200000-10000-19200+60-2560+8+14]
= 32x[3200000-29200-2560+82]
=32x(3200000-31760+82)
=32x(3168240+82)
=32x3168322
=(30+2)x 3168322
=95049660+6336644
=101386304
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展开全部
638×9932×16+14×32
=638×(9900+32)×16+14×32
=638×(10000-100)×16+638×32×16+14×32
=6380000×16-63800×16+638×32+14×32
=6380000×16-63800×16+(638+14)×32
=6380000×16-63800×16+1304×16
=(6380000-63800+1308)×16
=6443800×16
=638×(9900+32)×16+14×32
=638×(10000-100)×16+638×32×16+14×32
=6380000×16-63800×16+638×32+14×32
=6380000×16-63800×16+(638+14)×32
=6380000×16-63800×16+1304×16
=(6380000-63800+1308)×16
=6443800×16
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