Find:
$80 + 2 + \frac{1}{10}$

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Solution

$\frac{1}{10} = 0.1$ (count the number of zeros in the denominator and from the extreme right end of the numerator start counting that many numbers and place the decimal point)
So, $80 + 2 + \frac{1}{10}$ $= 80 + 2 + 0.1$
$= 82 + 0.1$
$= 82.1$ .
Therefore, $80 + 2 + \frac{1}{10}$ $= 82.1$

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Find:80+2+110

110=0.1 (count the number of zeros in the denominator and from the extreme right end of the numerator start counting that many numbers and place the decimal point)So, 80+2+110=80+2+0.1 =82+0.1 =82.1.Therefore, 80+2+110=82.1

Find:
$80 + 2 + \frac{1}{10}$

$\frac{1}{10} = 0.1$ (count the number of zeros in the denominator and from the extreme right end of the numerator start counting that many numbers and place the decimal point)
So, $80 + 2 + \frac{1}{10}$ $= 80 + 2 + 0.1$
$= 82 + 0.1$
$= 82.1$ .
Therefore, $80 + 2 + \frac{1}{10}$ $= 82.1$