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anonymous

  • one year ago

Mark simplified three over five divided by five over eight.; his work is shown below. Identify where he made his error. Original division problem: three over five divided by five over eight. Step 1: three over five multiplied by eight over five. Step 2: three times eight over five times five. Step 3: twenty-four over five. Step 4: four and four over five.

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  1. anonymous
    • one year ago
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    @mathway @King.Void. @welshfella are any of you available to help me?

  2. anonymous
    • one year ago
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    \[ \huge \frac{ \frac{ 3 }{ 5 } }{ \frac{ 5 }{ 8 } }\]

  3. anonymous
    • one year ago
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    Based on his work, Step 1 is \[\huge \frac{ 3 }{ 5 } \times \frac{ 8 }{ 5 }\] Is this correct?

  4. anonymous
    • one year ago
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    Yes

  5. anonymous
    • one year ago
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    Right, because when you divide, you multiply 3/5 to the reciprocal of 5/8, which is 8/5. :)

  6. anonymous
    • one year ago
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    Step 2 is \[\huge \frac{ 3 \times 8}{ 5 \times 5 }\] Is this right?

  7. anonymous
    • one year ago
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    Yes

  8. anonymous
    • one year ago
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    @mathway

  9. anonymous
    • one year ago
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    For Step 3, he multiplied\[ \huge \frac{ 3 \times 8}{ 5 \times 5 }=\frac{ 24 }{ 5 }\]. Is this correct?

  10. anonymous
    • one year ago
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    yes

  11. anonymous
    • one year ago
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    What is 3 x 8?

  12. anonymous
    • one year ago
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    What is 5 x 5?

  13. anonymous
    • one year ago
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    oh no 3x8= 24 5x5=25

  14. anonymous
    • one year ago
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    Yes, so was his Step 3 right or wrong? :)

  15. anonymous
    • one year ago
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    wrong

  16. anonymous
    • one year ago
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    So you can conclude that he made an error in Step 3. :)

  17. anonymous
    • one year ago
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    Yes

  18. anonymous
    • one year ago
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    Thank you (;

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