Lovleen bought a notebook for $₹25.25$ and a pen for $₹10.75.$ She gave $₹50$to the shopkeeper. How much money did she get back?

If $0.25$ can be expressed in fraction as $\frac{25}{k}$, then find the value of $k$.

Change the following decimal into fraction and to its lowest form:

$0.500$

Change the following decimals into fractions:

$1.25$

Arrange the following decimals in descending order:

$3.245, 3.425, 3.225, 3.524$

Arrange the following decimals in descending order:

$0.609, 0.690, 0.096, 0.069$

Write the following as a decimal:

$1+\frac{63}{1000}$