Math Match Money Expert — Set 31

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                    "expr": "10-9",
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                {
                    "expr": "5x6",
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                    "expr": "4x2",
                    "value": 8
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                {
                    "expr": "8+8",
                    "value": 16
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                    "expr": "8-6",
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            "answer": "10-9=1; 5x6=30; 4x2=8; 8+8=16; 8-6=2",
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            "type": "math-match",
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                    "expr": "8+8",
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                    "expr": "8+10",
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                    "expr": "9+3",
                    "value": 12
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                    "value": 6
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            "answer": "8+8=16; 8+10=18; 3-1=2; 9+3=12; 1+5=6",
            "question": "Match each expression with its answer: 8+8=?, 8+10=?, 3-1=?, 9+3=?, 1+5=?",
            "difficulty": "expert"
        },
        {
            "type": "math-match",
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                    "expr": "5+4",
                    "value": 9
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                    "expr": "6-2",
                    "value": 4
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                    "value": 24
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                {
                    "expr": "3+5",
                    "value": 8
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                    "expr": "8x9",
                    "value": 72
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            "answer": "5+4=9; 6-2=4; 4x6=24; 3+5=8; 8x9=72",
            "question": "Match each expression with its answer: 5+4=?, 6-2=?, 4x6=?, 3+5=?, 8x9=?",
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                    "expr": "9-8",
                    "value": 1
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                {
                    "expr": "7-1",
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                {
                    "expr": "6-2",
                    "value": 4
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                {
                    "expr": "7x9",
                    "value": 63
                },
                {
                    "expr": "2x5",
                    "value": 10
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            ],
            "answer": "9-8=1; 7-1=6; 6-2=4; 7x9=63; 2x5=10",
            "question": "Match each expression with its answer: 9-8=?, 7-1=?, 6-2=?, 7x9=?, 2x5=?",
            "difficulty": "expert"
        },
        {
            "type": "math-match",
            "subType": "math-match",
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                {
                    "expr": "7+5",
                    "value": 12
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                {
                    "expr": "6x5",
                    "value": 30
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                {
                    "expr": "8-4",
                    "value": 4
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                {
                    "expr": "5-4",
                    "value": 1
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                {
                    "expr": "1+10",
                    "value": 11
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            "answer": "7+5=12; 6x5=30; 8-4=4; 5-4=1; 1+10=11",
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                    "expr": "9-1",
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                {
                    "expr": "8-4",
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                    "expr": "7+3",
                    "value": 10
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                {
                    "expr": "2+3",
                    "value": 5
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                {
                    "expr": "7x5",
                    "value": 35
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                    "expr": "7x8",
                    "value": 56
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                    "expr": "6-6",
                    "value": 0
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                    "expr": "3x7",
                    "value": 21
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                {
                    "expr": "5+7",
                    "value": 12
                },
                {
                    "expr": "8x8",
                    "value": 64
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            "answer": "7x8=56; 6-6=0; 3x7=21; 5+7=12; 8x8=64",
            "question": "Match each expression with its answer: 7x8=?, 6-6=?, 3x7=?, 5+7=?, 8x8=?",
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                {
                    "expr": "8-4",
                    "value": 4
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                {
                    "expr": "6x4",
                    "value": 24
                }
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            "answer": "5x3=15; 9-4=5; 7-5=2; 8-4=4; 6x4=24",
            "question": "Match each expression with its answer: 5x3=?, 9-4=?, 7-5=?, 8-4=?, 6x4=?",
            "difficulty": "expert"
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