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45 X55竖式/

576x55=31680

如图~

308 × 55 = 16940

你没有看错么,是不是48开头的埃 48 x55-48x45 =(55-45)X48 =10X48 =480

4.6 × 55 = 253 竖式见图:

竖式计算的 420x55 怎么做 420 × 55 = 23100

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