a)434315:217×1000:225=434315/217×1000/225=62045/31×40/9=2481800/279
б)14000÷10-1418=140-1418=-1278
в)1000000-265378-81915-7347=1000000-354640=645360
г)28+675+3247+96819=100770
a)434315:217×1000:225=434315/217×1000/225=62045/31×40/9=2481800/279
б)14000÷10-1418=140-1418=-1278
в)1000000-265378-81915-7347=1000000-354640=645360
г)28+675+3247+96819=100770