easy Set 16 Form Exercise

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    "difficulty": "easy",
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    "problems": [
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            "type": "math-match",
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            "pairs": [
                {
                    "expr": "6+9",
                    "value": 15
                },
                {
                    "expr": "9-8",
                    "value": 1
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                {
                    "expr": "9+5",
                    "value": 14
                },
                {
                    "expr": "6x7",
                    "value": 42
                }
            ],
            "answer": "6+9=15; 9-8=1; 9+5=14; 6x7=42",
            "question": "Match each expression with its answer: 6+9=?, 9-8=?, 9+5=?, 6x7=?",
            "difficulty": "easy"
        },
        {
            "type": "math-match",
            "subType": "math-match",
            "pairs": [
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                    "expr": "7+10",
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                    "expr": "3-1",
                    "value": 2
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            "answer": "7+10=17; 6+6=12; 6x5=30; 3-1=2",
            "question": "Match each expression with its answer: 7+10=?, 6+6=?, 6x5=?, 3-1=?",
            "difficulty": "easy"
        },
        {
            "type": "math-match",
            "subType": "math-match",
            "pairs": [
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                    "expr": "4x3",
                    "value": 12
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                {
                    "expr": "2-1",
                    "value": 1
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                {
                    "expr": "7+2",
                    "value": 9
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                {
                    "expr": "9x7",
                    "value": 63
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            ],
            "answer": "4x3=12; 2-1=1; 7+2=9; 9x7=63",
            "question": "Match each expression with its answer: 4x3=?, 2-1=?, 7+2=?, 9x7=?",
            "difficulty": "easy"
        },
        {
            "type": "math-match",
            "subType": "math-match",
            "pairs": [
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                    "expr": "10-8",
                    "value": 2
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                {
                    "expr": "5x5",
                    "value": 25
                },
                {
                    "expr": "4x2",
                    "value": 8
                },
                {
                    "expr": "9-6",
                    "value": 3
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            "answer": "10-8=2; 5x5=25; 4x2=8; 9-6=3",
            "question": "Match each expression with its answer: 10-8=?, 5x5=?, 4x2=?, 9-6=?",
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            "type": "math-match",
            "subType": "math-match",
            "pairs": [
                {
                    "expr": "8-1",
                    "value": 7
                },
                {
                    "expr": "6-5",
                    "value": 1
                },
                {
                    "expr": "9+4",
                    "value": 13
                },
                {
                    "expr": "8-8",
                    "value": 0
                }
            ],
            "answer": "8-1=7; 6-5=1; 9+4=13; 8-8=0",
            "question": "Match each expression with its answer: 8-1=?, 6-5=?, 9+4=?, 8-8=?",
            "difficulty": "easy"
        },
        {
            "type": "math-match",
            "subType": "math-match",
            "pairs": [
                {
                    "expr": "2+2",
                    "value": 4
                },
                {
                    "expr": "7+7",
                    "value": 14
                },
                {
                    "expr": "5x9",
                    "value": 45
                },
                {
                    "expr": "10+10",
                    "value": 20
                }
            ],
            "answer": "2+2=4; 7+7=14; 5x9=45; 10+10=20",
            "question": "Match each expression with its answer: 2+2=?, 7+7=?, 5x9=?, 10+10=?",
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        },
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            "subType": "math-match",
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                    "expr": "9x8",
                    "value": 72
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                    "expr": "4x3",
                    "value": 12
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                    "expr": "9-5",
                    "value": 4
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                {
                    "expr": "3x3",
                    "value": 9
                }
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            "answer": "9x8=72; 4x3=12; 9-5=4; 3x3=9",
            "question": "Match each expression with its answer: 9x8=?, 4x3=?, 9-5=?, 3x3=?",
            "difficulty": "easy"
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                    "expr": "4+8",
                    "value": 12
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                {
                    "expr": "9-5",
                    "value": 4
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                    "expr": "6x6",
                    "value": 36
                },
                {
                    "expr": "7+1",
                    "value": 8
                }
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            "answer": "4+8=12; 9-5=4; 6x6=36; 7+1=8",
            "question": "Match each expression with its answer: 4+8=?, 9-5=?, 6x6=?, 7+1=?",
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