6.3+9.9*99+3.6怎么巧算

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6.3+9.9*99+3.6怎么巧算6.3+9.9*99+3.6怎么巧算6.3+9.9*99+3.6怎么巧算6.3+9.9*99+3.6=(6.3+3.6)+9.9*99=9.9+9.9*99=(1+

6.3+9.9*99+3.6怎么巧算
6.3+9.9*99+3.6怎么巧算

6.3+9.9*99+3.6怎么巧算
6.3+9.9*99+3.6
=(6.3+3.6)+9.9*99
=9.9+9.9*99
=(1+99)*9.9
=100*9.9
=990

6.3+9.9*99+3.6
=9.9+9.9*99
=9.9(1+99)
=9.9*100
=990

6.3+9.9*99+3.6
=9.9x99+9.9
=9.9x(99+1)
=9.9x100
=990