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Marcus and Jim both have tennis balls in their bags. Marcus has 7 balls in his bag and Jim has 22. How many tennis balls do they have if they put their balls together?

 

 

 

 

  • A

    22

  • B

    23

  • C

    21

  • D

    29

This is an addition problem because we want to know how many balls in total Marcus and Jim have together. We can simply add: