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calculati:2x13cm+123cm=........cm? 10x153dm+1400000mm ampartit la 100=........m? 1,2km-2,8dam=......cm? 5000mm+1200cm-70dm=......m? 43000mm-210dm=......m? 5900cm-14m-3000mm=.....m? 4x10 la puterea6cm-18hm=......km?