Реши примеры. 684000:90, 232000:20, 65100:700, 22400:200, 918000:900, 5400.90, 340.9, 20.50, 8500.70, 26.80, 323+558, 237+675, 195+18, 373+25, 119+446, 705-187, 952-134, 975-532, 827-412, 966-450.

Решение:

1. \( 684000 : 90 = 7600 \)
2. \( 232000 : 20 = 11600 \)
3. \( 65100 : 700 = 93 \)
4. \( 22400 : 200 = 112 \)
5. \( 918000 : 900 = 1020 \)
6. \( 5400 \cdot 90 = 486000 \)
7. \( 340 \cdot 9 = 3060 \)
8. \( 20 \cdot 50 = 1000 \)
9. \( 8500 \cdot 70 = 595000 \)
10. \( 26 \cdot 80 = 2080 \)
11. \( 323 + 558 = 881 \)
12. \( 237 + 675 = 912 \)
13. \( 195 + 18 = 213 \)
14. \( 373 + 25 = 398 \)
15. \( 119 + 446 = 565 \)
16. \( 705 - 187 = 518 \)
17. \( 952 - 134 = 818 \)
18. \( 975 - 532 = 443 \)
19. \( 827 - 412 = 415 \)
20. \( 966 - 450 = 516 \)

Ответ: 7600, 11600, 93, 112, 1020, 486000, 3060, 1000, 595000, 2080, 881, 912, 213, 398, 565, 518, 818, 443, 415, 516.