求过程!用简便方法计算
问题描述:
求过程!用简便方法计算
-3.14×(-6)+(-3.14)×(-10)+(-14)×3.14
(-5.327)×(-3)+5.327×(-7)+5.327×4
答
-3.14×(-6)+(-3.14)×(-10)+(-14)×3.14
=-3.14×(-6-10+14)
=-3.14×(-2)
=6.28
(-5.327)×(-3)+5.327×(-7)+5.327×4
=5.327×(3-1+4)
=5.327×6
=31.9623-1+4?哦, 我打快了。(-5.327)×(-3)+5.327×(-7)+5.327×4=5.327×(3-7+4)=5.327×0=0