$2439.97 - 1234.01 + 401.99 = ? + 989.99$

The sum of two numbers is $24$ and their product is $143$. The sum of their squares is

$1002 \div 49 \times 99 - 1299 = ?$

$\sqrt[3]{1331} + \sqrt[3]{1728} = ?$

If a number is multiplied by $\frac{3}{5}$ of itself,the value so obtained is $3^{2}$ less than $12^{2}$. What is $\frac{5}{3}$ of that number?

In a division sum,the divisor is $12$ times the quotient and $5$ times the remainder. If the remainder is $48$,then the dividend is: