19.94-19.91+19.88-19.85+19.82-……+1.04-1.01简便计算
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19.94-19.91+19.88-19.85+19.82-……+1.04-1.01简便计算
![19.94-19.91+19.88-19.85+19.82-……+1.04-1.01简便计算](/uploads/image/z/49728-48-8.jpg?t=19.94-19.91%2B19.88-19.85%2B19.82-%E2%80%A6%E2%80%A6%2B1.04-1.01%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97)
19.94-19.91+19.88-19.85+19.82-……+1.04-1.01
=(19.94-19.91)+(19.88-19.85)+(19.82-19.79)……+(1.04-1.01)
=0.03*[(19.94-1.04)÷0.06+1]
=0.03*316
=9.48
=(19.94-19.91)+(19.88-19.85)+(19.82-19.79)……+(1.04-1.01)
=0.03*[(19.94-1.04)÷0.06+1]
=0.03*316
=9.48