几道计算题(要写过程!)(-5)x(-4)x(-3)x(-2) (-10)x(-1/3)x(-0.1)x6x0 -3x5/6x1又4/5x(-0.25) (-4)x(-3)x(-2)

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几道计算题(要写过程!)(-5)x(-4)x(-3)x(-2) (-10)x(-1/3)x(-0.1)x6x0 -3x5/6x1又4/5x(-0.25) (-4)x(-3)x(-2)
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几道计算题(要写过程!)(-5)x(-4)x(-3)x(-2) (-10)x(-1/3)x(-0.1)x6x0 -3x5/6x1又4/5x(-0.25) (-4)x(-3)x(-2)
几道计算题(要写过程!)
(-5)x(-4)x(-3)x(-2) (-10)x(-1/3)x(-0.1)x6x0 -3x5/6x1又4/5x(-0.25) (-4)x(-3)x(-2)

几道计算题(要写过程!)(-5)x(-4)x(-3)x(-2) (-10)x(-1/3)x(-0.1)x6x0 -3x5/6x1又4/5x(-0.25) (-4)x(-3)x(-2)
=5x4x3x2=120两个负号乘一起可以消去
=0什么数乘0都是0
=-3x5/6x9/5x-1/4=9/8中间两数相乘,两侧数相乘,最后两个结果乘在一起
=-24三个负号相乘最后还有负号,把数的部分乘在一起,再添一个负号就行