1)650+(530-210)=650+320=970
2)(560+120)-240=680-240=440
3)(650-210)+(240+20)=440+260=700
4)1000-650-120=230
5)168+120+240=528
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1)650+(530-210)=650+320=970
2)(560+120)-240=680-240=440
3)(650-210)+(240+20)=440+260=700
4)1000-650-120=230
5)168+120+240=528