starter Set 21 Form Exercise

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                    "expr": "8+5",
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                    "expr": "9x8",
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                {
                    "expr": "3-3",
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                    "expr": "8x7",
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            "answer": "8+5=13; 9x8=72; 10-3=7; 3-3=0; 8x7=56",
            "question": "Match each expression with its answer: 8+5=?, 9x8=?, 10-3=?, 3-3=?, 8x7=?",
            "difficulty": "starter"
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            "type": "math-match",
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                    "expr": "4+6",
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                    "expr": "2+9",
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                    "expr": "9-7",
                    "value": 2
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            "answer": "4+6=10; 3-2=1; 8x5=40; 2+9=11; 9-7=2",
            "question": "Match each expression with its answer: 4+6=?, 3-2=?, 8x5=?, 2+9=?, 9-7=?",
            "difficulty": "starter"
        },
        {
            "type": "math-match",
            "subType": "math-match",
            "pairs": [
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                    "expr": "3x8",
                    "value": 24
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                {
                    "expr": "2-1",
                    "value": 1
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                    "expr": "2+7",
                    "value": 9
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                {
                    "expr": "9-6",
                    "value": 3
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                    "expr": "6-2",
                    "value": 4
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            "answer": "3x8=24; 2-1=1; 2+7=9; 9-6=3; 6-2=4",
            "question": "Match each expression with its answer: 3x8=?, 2-1=?, 2+7=?, 9-6=?, 6-2=?",
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                    "expr": "9x9",
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                {
                    "expr": "4-4",
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                {
                    "expr": "1+9",
                    "value": 10
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                {
                    "expr": "7x2",
                    "value": 14
                },
                {
                    "expr": "1+1",
                    "value": 2
                }
            ],
            "answer": "9x9=81; 4-4=0; 1+9=10; 7x2=14; 1+1=2",
            "question": "Match each expression with its answer: 9x9=?, 4-4=?, 1+9=?, 7x2=?, 1+1=?",
            "difficulty": "starter"
        },
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            "type": "math-match",
            "subType": "math-match",
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                {
                    "expr": "5-4",
                    "value": 1
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                {
                    "expr": "5x8",
                    "value": 40
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                {
                    "expr": "7-3",
                    "value": 4
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                {
                    "expr": "8x7",
                    "value": 56
                },
                {
                    "expr": "10-5",
                    "value": 5
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            "answer": "5-4=1; 5x8=40; 7-3=4; 8x7=56; 10-5=5",
            "question": "Match each expression with its answer: 5-4=?, 5x8=?, 7-3=?, 8x7=?, 10-5=?",
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                    "expr": "8-7",
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                    "expr": "2+9",
                    "value": 11
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                {
                    "expr": "8-1",
                    "value": 7
                },
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                    "expr": "2x3",
                    "value": 6
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            "answer": "8-7=1; 2-2=0; 2+9=11; 8-1=7; 2x3=6",
            "question": "Match each expression with its answer: 8-7=?, 2-2=?, 2+9=?, 8-1=?, 2x3=?",
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                    "expr": "8-7",
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                    "expr": "5-1",
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                    "expr": "8+5",
                    "value": 13
                },
                {
                    "expr": "5+2",
                    "value": 7
                },
                {
                    "expr": "8-5",
                    "value": 3
                }
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            "answer": "8-7=1; 5-1=4; 8+5=13; 5+2=7; 8-5=3",
            "question": "Match each expression with its answer: 8-7=?, 5-1=?, 8+5=?, 5+2=?, 8-5=?",
            "difficulty": "starter"
        },
        {
            "type": "math-match",
            "subType": "math-match",
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                    "expr": "2+9",
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                    "expr": "7+5",
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                    "value": 25
                },
                {
                    "expr": "8+5",
                    "value": 13
                },
                {
                    "expr": "8+10",
                    "value": 18
                }
            ],
            "answer": "2+9=11; 7+5=12; 5x5=25; 8+5=13; 8+10=18",
            "question": "Match each expression with its answer: 2+9=?, 7+5=?, 5x5=?, 8+5=?, 8+10=?",
            "difficulty": "starter"
        }
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