作业帮简便运算:99.5×100.5
来源：学生作业帮助网 编辑：作业帮 时间：2024/07/20 06:14:44
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简便运算:99.5×100.5
简便运算:99.5×100.5
简便运算:99.5×100.5
99.5*100.5
=(100-0.5)(100+0.5)
=100^2-0.5^2
=10000-0.25
=9999.75
99.5*100.5
=(100-0.5)(100+0.5)
=100^2-0.5^2
=10000-0.25
=9999.75
(100-0.5)*(100+0.5)=100^2-0.5^2=10000-0.25=9999.75
(100-0.5)×(100+0.5)=10000-0.25=9999.75