645× 100- 64500× 1+ 35670= ........ 13482: 1+(820× 45 - 36900)- 749×18=

1)645×100=645002)645×1=645003)64500-64500=04)0+35670=3567013482÷1=13482820×45=3690036900-36900=0749×18=1348213482-13482=0