What famous saying does this rebus mean?

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There are 3 apples in the basket and you take away 2. How many apples do you have now?

If I put in one canary per cage, I have one bird too many. If I put in two canaries per cage, I have one cage too many. How many cages and canaries do I have?

There once were seven dwarfs who were all brothers. They were all born two years apart. The youngest dwarf is seven years old. How old is his oldest brother?

Distances from you to certain cities are written below.

BERLIN 200 miles

PARIS 300 miles

ROME 400 milesAMSTERDAM 300 miles

CARDIFF ??? miles

How far should it be to Cardiff ?

What is the value of 1/2 of 2/3 of 3/4 of 4/5 of 5/6 of 6/7 of 7/8 of 8/9 of 9/10 of 1000?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

The Little ant seems to be always confused. Do you know why?

This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?