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NumbertimeAddition and Subtraction, Adding Three Numbers Clips

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  1. Adding using number bonds

    Duration: 01:12

  2. Adding three numbers - problem-solving

    Duration: 01:30

  3. Adding three small numbers by counting on

    Duration: 01:01

  4. Addition by counting in tens

    Duration: 00:48

  5. Addition strategies - largest number first

    Duration: 03:03