最后的情圣
幼苗
共回答了23个问题采纳率:100% 举报
(1)201×0.65-0.65,
=(201-1)×0.65,
=200×0.65,
=130;
(2)3.6×0.7×2.5,
=4×0.9×0.7×2.5,
=(0.9×0.7)×(2.5×4),
=0.63×10,
=6.3;
(3)6.44×3.7+6.44×6.3,
=6.44×(3.7+6.3),
=6.44×10,
=64.4;
(4)1.25×39.5×0.8,
=(1.25×0.8)×39.5,
=1×39.5,
=39.5.
1年前
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