Решите выражения:

Решение:

1. \( (90 - 14) : 4 = 76 : 4 = 19 \)
2. \( 300 : 5 + 23 \cdot 5 = 60 + 115 = 175 \)
3. \( 320 : (16 \cdot 5) = 320 : 80 = 4 \)
4. \( 45 + 12 \cdot 4 = 45 + 48 = 93 \)
5. \( 330 - 270 : 90 = 330 - 3 = 327 \)
6. \( 125 + (135 - 60) = 125 + 75 = 200 \)
7. \( 18 \cdot (5 \cdot 1) = 18 \cdot 5 = 90 \)
8. \( 125 \cdot 4 - 250 = 500 - 250 = 250 \)
9. \( 64 : 4 + 80 : 20 = 16 + 4 = 20 \)
10. \( (51 : 17) \cdot (98 : 14) = 3 \cdot 7 = 21 \)
11. \( 108 - 13 \cdot 7 + 42 = 108 - 91 + 42 = 17 + 42 = 59 \)
12. \( 800 - 100 \cdot (36 : 18) = 800 - 100 \cdot 2 = 800 - 200 = 600 \)
13. \( 306 + (142 + 641) : 9 = 306 + 783 : 9 = 306 + 87 = 393 \)
14. \( (700 - 142 \cdot 4) \cdot 3 = (700 - 568) \cdot 3 = 122 \cdot 3 = 366 \)
15. \( 526 + 341 - 404 : 4 = 526 + 341 - 101 = 867 - 101 = 766 \)
16. \( 413 \cdot 2 - 207 \cdot 3 = 826 - 621 = 205 \)
17. \( 900 - (531 + 286) - 48 = 900 - 817 - 48 = 83 - 48 = 35 \)

Ответ: 19, 175, 4, 93, 327, 200, 90, 250, 20, 21, 59, 600, 393, 366, 766, 205, 35.