medium Set 71 Form Exercise

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                    "expr": "9-2",
                    "value": 7
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                {
                    "expr": "4-1",
                    "value": 3
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                {
                    "expr": "10+2",
                    "value": 12
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                {
                    "expr": "5-1",
                    "value": 4
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                {
                    "expr": "3+5",
                    "value": 8
                }
            ],
            "answer": "9-2=7; 4-1=3; 10+2=12; 5-1=4; 3+5=8",
            "question": "Match each expression with its answer: 9-2=?, 4-1=?, 10+2=?, 5-1=?, 3+5=?",
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                    "expr": "6-3",
                    "value": 3
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                    "expr": "3-3",
                    "value": 0
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                {
                    "expr": "8-2",
                    "value": 6
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                    "value": 19
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            "answer": "6-3=3; 3+1=4; 3-3=0; 8-2=6; 10+9=19",
            "question": "Match each expression with its answer: 6-3=?, 3+1=?, 3-3=?, 8-2=?, 10+9=?",
            "difficulty": "medium"
        },
        {
            "type": "math-match",
            "subType": "math-match",
            "pairs": [
                {
                    "expr": "10-4",
                    "value": 6
                },
                {
                    "expr": "2+3",
                    "value": 5
                },
                {
                    "expr": "10-1",
                    "value": 9
                },
                {
                    "expr": "7-7",
                    "value": 0
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                {
                    "expr": "2+1",
                    "value": 3
                }
            ],
            "answer": "10-4=6; 2+3=5; 10-1=9; 7-7=0; 2+1=3",
            "question": "Match each expression with its answer: 10-4=?, 2+3=?, 10-1=?, 7-7=?, 2+1=?",
            "difficulty": "medium"
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                {
                    "expr": "4+9",
                    "value": 13
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                {
                    "expr": "3-3",
                    "value": 0
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                {
                    "expr": "10+6",
                    "value": 16
                },
                {
                    "expr": "3+8",
                    "value": 11
                },
                {
                    "expr": "10-6",
                    "value": 4
                }
            ],
            "answer": "4+9=13; 3-3=0; 10+6=16; 3+8=11; 10-6=4",
            "question": "Match each expression with its answer: 4+9=?, 3-3=?, 10+6=?, 3+8=?, 10-6=?",
            "difficulty": "medium"
        },
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            "type": "math-match",
            "subType": "math-match",
            "pairs": [
                {
                    "expr": "6-4",
                    "value": 2
                },
                {
                    "expr": "9-2",
                    "value": 7
                },
                {
                    "expr": "2-1",
                    "value": 1
                },
                {
                    "expr": "4+1",
                    "value": 5
                },
                {
                    "expr": "2x3",
                    "value": 6
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            "answer": "6-4=2; 9-2=7; 2-1=1; 4+1=5; 2x3=6",
            "question": "Match each expression with its answer: 6-4=?, 9-2=?, 2-1=?, 4+1=?, 2x3=?",
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            "subType": "math-match",
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                    "expr": "6x6",
                    "value": 36
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                    "expr": "9-6",
                    "value": 3
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                    "expr": "9+10",
                    "value": 19
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                {
                    "expr": "2x9",
                    "value": 18
                },
                {
                    "expr": "5+9",
                    "value": 14
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            "question": "Match each expression with its answer: 6x6=?, 9-6=?, 9+10=?, 2x9=?, 5+9=?",
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                    "expr": "6x6",
                    "value": 36
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                    "expr": "3-3",
                    "value": 0
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                {
                    "expr": "10+9",
                    "value": 19
                },
                {
                    "expr": "9x9",
                    "value": 81
                },
                {
                    "expr": "5-1",
                    "value": 4
                }
            ],
            "answer": "6x6=36; 3-3=0; 10+9=19; 9x9=81; 5-1=4",
            "question": "Match each expression with its answer: 6x6=?, 3-3=?, 10+9=?, 9x9=?, 5-1=?",
            "difficulty": "medium"
        },
        {
            "type": "math-match",
            "subType": "math-match",
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                    "expr": "9x3",
                    "value": 27
                },
                {
                    "expr": "10-6",
                    "value": 4
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                    "expr": "7-5",
                    "value": 2
                },
                {
                    "expr": "4x6",
                    "value": 24
                },
                {
                    "expr": "5+9",
                    "value": 14
                }
            ],
            "answer": "9x3=27; 10-6=4; 7-5=2; 4x6=24; 5+9=14",
            "question": "Match each expression with its answer: 9x3=?, 10-6=?, 7-5=?, 4x6=?, 5+9=?",
            "difficulty": "medium"
        }
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