Find the absolute value of $-15$.

From the temperatures $4^{\mathrm{o}}\mathrm{C}$ and $-5^{\mathrm{o}}\mathrm{C}$, if the lesser temperature is indicated by $k°\mathrm{C}$ then, find the value of $k$.

Which temperature is lesser?
$x=3^{\mathrm{o}}\mathrm{C}$ or $y=-3^{\mathrm{o}}\mathrm{C}$.

Write your answer in terms of $x \& y$.

If the temperature that is lesser is $k°C$, find $k$.

$-2^{\mathrm{o}}\mathrm{C}$ or $-1^{\mathrm{o}}\mathrm{C}$.

Add the following:
$12+23$