Multiples of 50 are easy to spot because they all end in 50 or at least two zeros. 

Look at the first few multiples of 50 and check that this is true.

50, 100, 150, 200, 250, 300, 350, 400, 450 ...

Examples

200   350   450   900   1,250   2,000 are all multiples of 50.

They all end in 50 or at least two zeros.

60   240    1,430   1,660 are NOT multiples of 50.

None of them ends in 50 or at least two zeros.

Shall we have a go at spotting multiples of 50 in the questions that follow?