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1. 3 + 4 × 2 - 5 ÷ 1 = ? 2. 7 × (6 + 3) - 2 ÷ 2 = ? 3. 8 ÷ (4 - 2) × 3 + 1 = ? 4. 5 × 2 + 3 × 4 - 6 = ? 5. (9 + 3) × 2 - 4 ÷ 1 = ? 6. 6 ÷ (2 + 1) × 3 - 5 = ? 7. 4 × (5 - 2) + 3 ÷ 1 = ? 8. 7