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简介:
1.25.9-6.47-3.53
=25.9-(6.47+3.53)
=25.9-10
=15.9
2.0.5×7.49×2
=0.5×2×7.49
=1×7.49
=7.49
3.0.45×101
=0.45×(100+1)
=0.45×100+0.45×1
=45+0.45
=45.45
4.8.8×12.5
=1.1×(8×12.5)
=1.1×100
=110
5.25×0.125×8
=25×(0.125×8)
=25×1
=25
6.5.34×99+5.34
=5.34×(99+1)
=5.34×100
=534
7.25×0.72
=25×0.8×0.9
=20×0.9
=18
8.0.78×101
=0.78×(100+1)
=0.78×100+0.78×1
=78+0.78
=78.78