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A math book is .78 centimeters thick. What is the width of 21 math books on a shelf?

  • Math -

    That's an awfully slim math book. Are you sure it's only 0.78 cm thick?

    0.78 * 21 = 16.38 cm

  • Math -

    This is so easy and I'm a fourth grader.

    All you have to do TJ is to multiply 78 by 21

  • h7GyfT -


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