{
  "name": "Add and Subtract Mixed Numbers",
  "order": 12,
  "challenges": [
    {
      "id": "59a5801209a6acac5983b422",
      "title": "Add Mixed Numbers with Common Denominators",
      "description": [
        ""
      ],
      "challengeSeed": [
        ""
      ],
      "tests": [
        ""
      ]
    },
    {
      "id": "59a5801209a6acac59836376",
      "title": "Subtract Mixed Numbers with Common Denominators",
      "description": [
        ""
      ],
      "challengeSeed": [
        ""
      ],
      "tests": [
        ""
      ]
    },
    {
      "id": "59a5801209a6acac59836377",
      "title": "Subtract Mixed Numbers with Different Denominators",
      "description": [
        ""
      ],
      "challengeSeed": [
        ""
      ],
      "tests": [
        ""
      ]
    },
    {
      "id": "59a5801209a6acac59836378",
      "title": "Add and Subtract Three Mixed Numbers",
      "description": [
        ""
      ],
      "challengeSeed": [
        ""
      ],
      "tests": [
        ""
      ]
    },
    {
      "id": "59a5801209a6acac59836379",
      "title": "Add and Subtract Mixed Numbers Word Problems",
      "description": [
        ""
      ],
      "challengeSeed": [
        ""
      ],
      "tests": [
        ""
      ]
    }
  ]
}