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anaerrez Group Title

Estimate the sum of 9.327 + 5.132 to one decimal place.

  • one year ago
  • one year ago

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  1. mathmate Group Title
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    For an estimation, you could truncate to 1 decimal place and add: 9.3+5.1=14.4 To get a better estimate, add the second decimal place, if it is 5 or more, then round up the estimate. Second decimal place = 2+3=5 >=5, so round up 14.4 to 14.5.

    • one year ago
  2. zaynahf Group Title
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    |dw:1358009519474:dw|

    • one year ago
  3. anaerrez Group Title
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    I got 14.459

    • one year ago
  4. anaerrez Group Title
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    Did I get it right ? :-)

    • one year ago
  5. zaynahf Group Title
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    Yep! Now you just neeed to round up until you get to the last decimal place. What do you think the 5 could be rounded to? up to 6, or down to stay at 5?

    • one year ago
  6. anaerrez Group Title
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    6?

    • one year ago
  7. zaynahf Group Title
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    Good, now you have 14.46, what can that be rounded to?

    • one year ago
  8. anaerrez Group Title
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    Uummm 14.50?? :-P

    • one year ago
  9. zaynahf Group Title
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    Yes, but you do not need the 0 after the 5, since you want it to be only one decimal place. This way, you will have 14.5, your answer

    • one year ago
  10. anaerrez Group Title
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    Thank you sooo much

    • one year ago
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