算一算. 25×3×16 165÷5÷3 279÷9×23 198+96÷2 65×12-270 42×2×5.
1个回答
展开全部
(1)25×3×16,
=25×3×4×4,
=(25×4)×(3×4),
=100×12,
=1200;
(2)165÷5÷3,
=165÷(5×3),
=165÷15,
=11;
(3)279÷9×23,
=31×23,
=713;
(4)198+96÷2,
=198+48,
=246;
(5)65×12-270
=780-270,
=510;
(6)42×2×5,
=42×(2×5),
=42×10,
=420.
=25×3×4×4,
=(25×4)×(3×4),
=100×12,
=1200;
(2)165÷5÷3,
=165÷(5×3),
=165÷15,
=11;
(3)279÷9×23,
=31×23,
=713;
(4)198+96÷2,
=198+48,
=246;
(5)65×12-270
=780-270,
=510;
(6)42×2×5,
=42×(2×5),
=42×10,
=420.
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询