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0.503乘1.2等于?列竖式计算

602-503 =602-502-1 =100-1 =99

345x7=2415, 503x3=1509,69x4=276, 470x8=3760

乘数中不带0 135×45= 54×312= 138×54= 632×56= 312×25= 56×456= 46×589= 624×78= 253×56= 72×124= 437×28= 487×65= 156×39= 232×24= 126×28= 459×72= 193×27= 138×34= 356×46= 乘数中间有0 408×25= 203×32= 304×28= 208×2...

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