计算:2004.05×1997.05-2001.05×1999.05=1989.51989.5.
来源:学生作业帮 编辑:神马作文网作业帮 分类:数学作业 时间:2024/10/04 21:29:31
计算:2004.05×1997.05-2001.05×1999.05=1989.51989.5.
2004.05×1997.05-2001.05×1999.05
=2004.05×(1999.05-2)-2001.05×1999.05
=2004.05×1999.05-2004.05×2-2001.05×1999.05
=(2004-2001)×1999.05-2004.05×2
=3×1999.05-2×2004.05
=3×1999+3×0.05-2×2000-2×4.05
=3×2000-3+0.15-2×2000-8.10
=2000-3+0.15-8.10
=2000+0.15-11.10
=1989.05.
故答案为:1989.05.
=2004.05×(1999.05-2)-2001.05×1999.05
=2004.05×1999.05-2004.05×2-2001.05×1999.05
=(2004-2001)×1999.05-2004.05×2
=3×1999.05-2×2004.05
=3×1999+3×0.05-2×2000-2×4.05
=3×2000-3+0.15-2×2000-8.10
=2000-3+0.15-8.10
=2000+0.15-11.10
=1989.05.
故答案为:1989.05.
计算:2004.05×1997.05-2001.05×1999.05=1989.51989.5.
计算2001.05*1999.05-2004.05*1997.05的值
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