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28 March, 21:58

Estimate the result by rounding the numbers to the second decimal before performing the operation. Then also round your answer to the second decimal.

3.15:0.0318

8123:0.211

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  1. 28 March, 22:19
    0
    1) 105.00

    ii) 38,680. 95

    Step-by-step explanation:

    1) 3.15:0.0318

    Now, we have to round the number to two decimal places

    3.14 = already rounded to two decimal places

    0.0318 = have four decimals

    Now, the rule of rounding the decimals says that if the number next to rounding digit is less than 5 then drop all the numbers right to the rounding digit. In contrast, if the number is 5 or grater than that, add one to rounding digit.

    So,

    0.0318 = 0.03 (as 1 is less than 5)

    Now by performing the operation

    3.15:0.03

    => 105

    or 105.00 (rounding to two decimal places)

    2) 8123:0.211

    8123 = already rounded to two decimal places

    0.211 = have three decimals

    Converting it to two decimals,

    0.211 = 0.21 (as 1 is less than 5)

    Now by performing the operation

    8123:0.21

    => 38,680. 95238

    => 38,680. 95 (as 2 is less than 5)
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