Tính (theo mẫu SGK)

a) 25×98 = ............................................................................................................................

107×2120 = ..............................................................................................................................

6×34 = ..................................................................................................................................

910×73×514 = .......................................................................................................................

b) 65:920 = .........................................................................................................................

8:165 = ..................................................................................................................................

214:7 = ................................................................................................................................

6×112:52 = ..........................................................................................................................

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