1: (9 13) ÷ 11 × 12 2: ((9 13) ÷ 11) × 12 3: (9 13) ÷ (11 ÷ 12) 4: (9 13) × 12 ÷ 11 5: ((9 13) × 12) ÷ 11 6: (9 13) × (12 ÷ 11) 7: (12 × (9 13)) ÷ 11 8: 12 × (9 13) ÷ 11 9: 12 × ((9 13) ÷ 11) 10: 12 ÷ 11 ×(9 13) 11: (12 ÷ 11) × (9 13) 12: 12 ÷ (11 ÷ (9 13)) 13: 12 ÷ 11 ×(13 9) 14: (12 ÷ 11) × (13 9) 15: 12 ÷ (11 ÷ (13 9)) 16: (12 × (13 9)) ÷ 11 17: 12 × (13 9) ÷ 11 18: 12 × ((13 9) ÷ 11) 19: (13 9) ÷ 11 × 12 20: ((13 9) ÷ 11) × 12 21: (13 9) ÷ (11 ÷ 12) 22: (13 9) × 12 ÷ 11 23: ((13 9) × 12) ÷ 11 24: (13 9) × (12 ÷ 11)
