[{"id": 1, "type": "short_answer", "skill": "subtraction", "question": "Calculate: 103 − 79", "difficulty": "medium", "explanation": "Subtract by place value, borrowing as needed.", "needs_review": false, "correct_answer": "24"}, {"id": 2, "type": "multiple_choice", "skill": "subtraction", "options": ["25", "24", "182", "22"], "question": "What is 103 − 79?", "difficulty": "easy", "explanation": "103-79=24", "needs_review": false, "correct_answer": "24"}, {"id": 3, "type": "short_answer", "skill": "computation", "question": "Calculate: 11 × 14", "difficulty": "medium", "explanation": "Multiply: 11×14=154", "needs_review": false, "correct_answer": "154"}, {"id": 4, "type": "short_answer", "skill": "computation", "question": "Calculate: 3 × 8", "difficulty": "medium", "explanation": "Multiply: 3×8=24", "needs_review": false, "correct_answer": "24"}, {"id": 5, "type": "short_answer", "skill": "computation", "question": "Calculate: 14 × 13", "difficulty": "medium", "explanation": "Multiply: 14×13=182", "needs_review": false, "correct_answer": "182"}]