Решение:
- \( 42 : 3 = (30 + 12) : 3 = 10 + 4 = 14 \)
- \( 56 : 4 = 14 \)
- \( 90 : 5 = 18 \)
- \( 96 : 6 = 16 \)
- \( 78 : 6 = 13 \)
- \( 60 : 4 = 15 \)
- \( 38 : 2 = 19 \)
- \( 48 : 4 = 12 \)
- \( 90 : 2 = 45 \)
- \( 64 : 4 = 16 \)
- \( 81 : 3 = 27 \)
- \( 46 : 2 = 23 \)
- \( 63 : 3 = 21 \)
- \( 68 : 4 = 17 \)
- \( 90 : 6 = 15 \)
- \( 95 : 5 = 19 \)
- \( 84 : 4 = 21 \)
- \( 96 : 4 = 24 \)
- \( 72 : 2 = 36 \)
- \( 57 : 3 = 19 \)
Ответ: 14, 14, 18, 16, 13, 15, 19, 12, 45, 16, 27, 23, 21, 17, 15, 19, 21, 24, 36, 19.