计算:(1)3×(-5)=______;(2)(-5)×(-4)=______;(3)-2×0=______;(4)(-2 1 3
计算:(1)3×(-5)=______;(2)(-5)×(-4)=______;(3)-2×0=______;(4)(-213)×914=______;(5)(-1)×(...
计算:(1)3×(-5)=______;(2)(-5)×(-4)=______;(3)-2×0=______;(4)(-2 1 3 )× 9 14 =______;(5)(-1)×(-2)×(-3)=______;(6)(-3)×(+2)×(-5)=______.
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