B Set 11 Unknown

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                "question": "Carlos bought 5 marbles but lost 4 of them. How many marbles does Carlos have now?",
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                "id": 4,
                "type": "word-problems",
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                "question": "Jake bought 3 books but lost 1 of them. How many books does Jake have now?",
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                "id": 5,
                "type": "word-problems",
                "subType": "multiplication",
                "question": "Emma bought 10 boxes. Each box has 4 cookies. How many cookies does Emma have in total?",
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                "correctAnswer": "40",
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                "id": 6,
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                "question": "Sofia had 1 pencils. A friend gave Sofia 10 more pencils. How many pencils does Sofia have in all?",
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                "id": 8,
                "type": "word-problems",
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                "question": "Ava had 4 cards and sold 3 of them. How many cards does Ava have remaining?",
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                "id": 10,
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                "question": "Sam bought 2 boxes. Each box has 9 cookies. How many cookies does Sam have in total?",
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                "id": 11,
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                "question": "Lisa bought 9 boxes. Each box has 9 grapes. How many grapes does Lisa have in total?",
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                "id": 12,
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                "subType": "addition",
                "question": "Liam has 3 stickers and gets 10 more. How many stickers does Liam have now?",
                "answer": 13,
                "correctAnswer": "13",
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                "id": 13,
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                "subType": "addition",
                "question": "Sofia put 3 stickers in a basket and added 8 more. How many stickers are in the basket in total?",
                "answer": 11,
                "correctAnswer": "11",
                "difficulty": "normal"
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                "id": 14,
                "type": "word-problems",
                "subType": "addition",
                "question": "Mia put 9 toys in a basket and added 1 more. How many toys are in the basket in total?",
                "answer": 10,
                "correctAnswer": "10",
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                "id": 15,
                "type": "word-problems",
                "subType": "subtraction",
                "question": "Lisa had 4 books and gave away 2. How many books does Lisa have left?",
                "answer": 2,
                "correctAnswer": "2",
                "difficulty": "normal"
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            {
                "id": 16,
                "type": "word-problems",
                "subType": "multiplication",
                "question": "Mia bought 4 boxes. Each box has 3 cards. How many cards does Mia have in total?",
                "answer": 12,
                "correctAnswer": "12",
                "difficulty": "normal"
            },
            {
                "id": 17,
                "type": "word-problems",
                "subType": "addition",
                "question": "Sofia had 6 books. A friend gave Sofia 2 more books. How many books does Sofia have in all?",
                "answer": 8,
                "correctAnswer": "8",
                "difficulty": "normal"
            },
            {
                "id": 18,
                "type": "word-problems",
                "subType": "subtraction",
                "question": "Sam had 10 toys and gave away 5. How many toys does Sam have left?",
                "answer": 5,
                "correctAnswer": "5",
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                "id": 19,
                "type": "word-problems",
                "subType": "subtraction",
                "question": "Liam had 3 cookies and sold 2 of them. How many cookies does Liam have remaining?",
                "answer": 1,
                "correctAnswer": "1",
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            },
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                "id": 20,
                "type": "word-problems",
                "subType": "subtraction",
                "question": "Lisa had 10 toys and sold 2 of them. How many toys does Lisa have remaining?",
                "answer": 8,
                "correctAnswer": "8",
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