[{"id":28174,"skill_id":151,"original_question_id":null,"difficulty_id":1,"is_diagnostic":0,"user_id":2,"question":"Find the missing number in the box.<br>$$280 \\times 500 = \\boxed{?}$$","explanation":"Method: multiply by tens and hundreds. \\(280 \\times 500 = 280 \\times 5 \\times 100 = 1400 \\times 100 = 140\\,000\\). Answer: 140 000.","question_image":null,"answer0":"1400","answer0_image":null,"answer1":"14 000","answer1_image":null,"answer2":"140 000","answer2_image":null,"answer3":"1 400 000","answer3_image":null,"correct_answer":2,"status_id":6,"source":"Rosyth 2024 P5 Weighted Assessment 2 Q1","type_id":1,"calculator":null,"created_at":"2026-05-29 15:03:05","qa_status":"ai_generated","qa_reviewer_id":null,"last_qa_editor_id":null,"qa_notes":null,"qa_reviewed_at":null,"published_at":null,"updated_at":"2026-05-29 15:03:05","gamecodes_id":null,"reviewed_by":null,"reviewed_at":null}]