Ответ:
- \(1\,000\,000 : 1\,000 - 999 = 1\,000 - 999 = 1\).
- \(1\,000\,000 : 1\,000 + 1 = 1\,000 + 1 = 1\,001\).
- \(420\,000 - 20\,000 = 400\,000\).
- \(28\,000 : 4 \cdot 100 = 7\,000 \cdot 100 = 700\,000\).
- \(234 \cdot 3 : 9 = 702 : 9 = 78\).
Ответ: 1; 1 001; 400 000; 700 000; 78.
