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5th math

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Nia scored 21 points in the game. If she scored 13 points in the first half of the game, how many points did she score in the second half?

I subtract 21 from 13 and got 7?
To check my work I added 13+7 and got 20?

  • 5th math -

    21 - 13 is 8, and not seven.
    13 + 8 = 21!

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