6.12*99+6.12简便方法怎么算?还有5.9*101-5.9都用简便方法
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6.12*99+6.12简便方法怎么算?还有5.9*101-5.9都用简便方法
![6.12*99+6.12简便方法怎么算?还有5.9*101-5.9都用简便方法](/uploads/image/z/8320440-48-0.jpg?t=6.12%2A99%2B6.12%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E6%80%8E%E4%B9%88%E7%AE%97%3F%E8%BF%98%E6%9C%895.9%2A101-5.9%E9%83%BD%E7%94%A8%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95)
6.12×99+6.12
=6.12×(99+1)
=6.12×100
=612
5.9×101-5.9
=5.9×(101-1)
=5.9×100
=590
=6.12×(99+1)
=6.12×100
=612
5.9×101-5.9
=5.9×(101-1)
=5.9×100
=590