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渚�1

440.16+439.72+16.21+36.43=( )

绗竴绲勶細A.932.54 B.910.53 C.932.52 D.939.25

绗簩绲勶細A.929.36 B.930.22 C.932.52 D.939.25

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渚�2

117.09+130.43+155.12+176.37=( )

A.579.01 B.622.31 C.581.21 D.688.91

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渚�3

2637.2+278.1-1892+7891.3=( )

A.10800 B.8910 C.9110 D.7430

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