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Mathematics

3rd

grade

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RESTAR 21 A NÚMEROS DE DOS CIFRAS

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10 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt

    31-21=

    9

    11

    10

  • 2. Multiple Choice
    30 seconds
    1 pt

    35-21=

    15

    14

    11

  • 3. Multiple Choice
    30 seconds
    1 pt

    40-21=

    30

    29

    19

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