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anonymous

  • one year ago

@iGreen A student earned a grade of 80% on a Math Test that had 20 problems. How many problems on this test did the student answer correctly?

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  1. iGreen
    • one year ago
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    Multiply..

  2. iGreen
    • one year ago
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    80% * 20 = ?

  3. iGreen
    • one year ago
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    \(\sf 80\% \rightarrow 0.80\)

  4. iGreen
    • one year ago
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    Remember, percentages are parts of 100, so to simplify a percentage, just divide it by 100. \(\sf 80\% \rightarrow \dfrac{80}{100} \rightarrow 0.80\)

  5. anonymous
    • one year ago
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    Oh okay. o.o

  6. anonymous
    • one year ago
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    Okay, that's 16. o.o

  7. iGreen
    • one year ago
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    Yep, that's our answer..the student got 16 questions correct out of 20. To check, divide. \(\sf \dfrac{16}{20} \rightarrow 0.80 \rightarrow 80\%\)

  8. anonymous
    • one year ago
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    Ohhhh okay. I'm in Summer School for only Math, you make it so easy, for me it just seem really hard..

  9. iGreen
    • one year ago
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    That's what I'm here for \(\Huge\ddot\smile\)

  10. anonymous
    • one year ago
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    ^_^ So sweet.

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