1. 509×603-999999/11+3982=220000
1) 509×603=306927
2) 999999/11=90909
3) 306927-90909=216018
4) 216018+3982=220000
2. (8535-1579):4+3456=5195
1) 8535-1579=6956
2) 6956:4=1739
3) 1739+3456=5195
3. (12789-8845):4+26922=27908
1) 12789-8845=3944
2) 3944:4=986
3) 986+26922=27908
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Answers & Comments
1. 509×603-999999/11+3982=220000
1) 509×603=306927
2) 999999/11=90909
3) 306927-90909=216018
4) 216018+3982=220000
2. (8535-1579):4+3456=5195
1) 8535-1579=6956
2) 6956:4=1739
3) 1739+3456=5195
3. (12789-8845):4+26922=27908
1) 12789-8845=3944
2) 3944:4=986
3) 986+26922=27908