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March 26, 2017

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Explain how you could estimate 22% of 78 to check if your answer is reasonable.

  • Math - ,

    22%=22/100


    22% of 78= 22*78/100 = 1716/100 = 17.16

  • Math - ,

    An exact answer is definitely not required.

    20% is approximately a fifth (1/5)

    78 is nearly 80

    a fifth of 80 is 16

    so the answer should be near 16

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