(700·100-100):10=6 990
1) 700·100=70 000
2) 70 000-100=69 000
3) 69 000:10=6 900
(1 089-(990:10)):9=110
1) 990:10=99
2) 1 089-99=990
3) 990:9=110
180:(2+18):9=1
1) 2+18=20
2) 180:20=9
3) 9:9=1
505-(45·6-35)=270
1) 45·6=270
2) 270-35=235
3) 505-235=270
(700*100-100):10=6.990
700*100=70000
70000-100=69000
69000:10=6900
(1.089-(990:10)):9=110
990:10=99
1089-99=990
990:9=110
2+18=20
180:20=9
9:9=1
505-(45*6-35)=270
45*6=270
270-35=235
505-235=270
(700·100-100):10=6 990
1) 700·100=70 000
2) 70 000-100=69 000
3) 69 000:10=6 900
(1 089-(990:10)):9=110
1) 990:10=99
2) 1 089-99=990
3) 990:9=110
180:(2+18):9=1
1) 2+18=20
2) 180:20=9
3) 9:9=1
505-(45·6-35)=270
1) 45·6=270
2) 270-35=235
3) 505-235=270
(700*100-100):10=6.990
700*100=70000
70000-100=69000
69000:10=6900
(1.089-(990:10)):9=110
990:10=99
1089-99=990
990:9=110
180:(2+18):9=1
2+18=20
180:20=9
9:9=1
505-(45*6-35)=270
45*6=270
270-35=235
505-235=270