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20 October, 17:55

a forest ranger correctly rounded the number of visitors to park to be 120,000 visitors. write a number that could be the actual number of visitors if he rounded to the nearest ten thousand.

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  1. 20 October, 17:58
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    124,000 can be the actual number

    Step-by-step explanation:

    * Lets explain how to solve the number

    - The number of visitors to the park is 120,000 visitors rounded

    to the nearest ten thousands

    - The round to nearest digit means look to the digit before this

    digit if < 5 we put all the digits before the rounded digit zero and

    keep it as it, if the number before the rounded digit is ≥ 5 we put

    all the digits before the rounded digit zero and add the rounded

    digit by 1

    - Ex:

    # To round 12,345 to the nearest thousand look to the hundred

    digit (3), 3 < 5, then the rounded number is 12,000

    # To round 12,745 to the nearest thousand look to the hundred

    digit (7), 7 > 5, then the rounded number is 13,000

    - To find the actual number lets do these steps

    1. Divide the ten thousands by 2

    ∵ 10,000 : 2 = 5,000

    2. Add the result and subtract the result from the rounded number

    ∵ 120,000 - 5000 = 115,000

    ∵ 120,000 + 5000 = 125,500

    3. The actual number is between these two numbers

    ∴ 115,000 ≤ actual number < 125,000

    - Remember: we can not take the number 125,000 as the actual

    number because when we round it to the nearest ten thousand

    the answer will be 130,000

    ∴ You can chose any numbers belongs to this range

    * I will chose 124,000 can be the actual number
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