Which smallest number must be added to 2203 so that we get a perfect square? 

What approximate values should come in place of the question mark(?) in the following question?

The simplified value of
$${{1\over 3}÷{1\over 3}×{1\over 3}\over{1\over 3}÷{1\over 3}of{1\over 3}}-{1\over 9}$$

If the sum and difference of two number are 20 and 8 respectively, then the difference of their squares is: 

Simplification the following equations shown below

What approximate value should come at place of the question mark(?) in the following question?

Direction : What value should come in the place of question mark (?) in the following questions?

125% of 2440 – 75% of 1856 = ?