13. Выполни устно сложение и вычитание.

Привет! С радостью помогу тебе решить эти примеры. Давай запишем ответы по столбикам. ### Столбик А 1. $40 + 5 = 45$ 2. $60 + 20 = 80$ 3. $500 + 5 = 505$ 4. $30 + 60 = 90$ 5. $100 + 4 = 104$ 6. $100 + 90 = 190$ 7. $50 + 300 = 350$ 8. $80 + 20 = 100$ 9. $100 + 70 = 170$ 10. $7 + 200 = 207$ 11. $50 + 20 = 70$ 12. $800 + 200 = 1000$ 13. $40 + 60 = 100$ 14. $400 + 4 = 404$ 15. $40 + 500 = 540$ 16. $90 + 10 = 100$ 17. $3 + 300 = 303$ 18. $100 + 60 = 160$ 19. $800 + 200 = 1000$ 20. $500 + 40 = 540$ ### Столбик Б 1. $30 + 40 = 70$ 2. $100 + 70 = 170$ 3. $40 + 50 = 90$ 4. $300 + 30 = 330$ 5. $600 + 400 = 1000$ 6. $200 + 50 = 250$ 7. $70 + 200 = 270$ 8. $30 + 20 = 50$ 9. $40 + 600 = 640$ 10. $80 + 10 = 90$ 11. $200 + 60 = 260$ 12. $100 + 800 = 900$ 13. $400 + 400 = 800$ 14. $20 + 70 = 90$ 15. $1000 + 90 = 1090$ 16. $500 + 40 = 540$ 17. $800 + 0 = 800$ 18. $300 + 700 = 1000$ 19. $200 + 60 = 260$ 20. $100 + 600 = 700$ ### Столбик В 1. $110 - 70 = 40$ 2. $150 - 90 = 60$ 3. $130 - 70 = 60$ 4. $120 - 90 = 30$ 5. $150 - 80 = 70$ 6. $120 - 30 = 90$ 7. $200 - 80 = 120$ 8. $110 - 40 = 70$ 9. $700 - 70 = 630$ 10. $120 - 40 = 80$ 11. $140 - 80 = 60$ 12. $180 - 90 = 90$ 13. $120 - 80 = 40$ 14. $110 - 30 = 80$ 15. $160 - 90 = 70$ 16. $130 - 80 = 50$ 17. $110 - 50 = 60$ 18. $120 - 60 = 60$ 19. $140 - 50 = 90$ 20. $130 - 90 = 40$