90:30. 7•8-42:7. 36:4+27 100:20. 9•9-9•3. 50-21:3. РЕШИ ПРИМЕРЫ
90:30=3 7•8-42:7=50 36:4+27=36 100:20=5 9•9-9•3=54 50-21:3=43
1) 90:30=3 2) 7*8-42:7=50 3) 36:4+27=36 4) 100:20=5 5) 9*9-9*3=54 6) 50-21:3=43