Răspuns:
609:3+852:4-695:5=203+213-139=416-139=272
170×10:17-(120-45)×2:5=1700:17-75×2:5=100-150:5=100-30=70
383+(1000-502):6=383+498:6=383+83=466
[472+51×4-(480:4+32×5)]×1000=[472+204-(120+160)]×1000
=(676-280)×1000=396×1000=396000
3000-5×[41+(84-8×8:4):2]=3000-5×[41+(84-64:4):2=
3000-5×[41+(84-16):2]=3000-5×(41+68:2)=3000-5×(41+34)=
3000-5×75=3000-375=2625