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$第4课时两位数乘两位数(进位) 13627202856二、151216102546 150533921872列式略三、略四、1.(1)18 ×14=252(千米)(2)68×25=1700(千米) (3)120×10=1200千米)2.16×14=224(个 3.25×58=1450(元)48×50=2400(元)4. 9-4=555÷5=1111×34=374