Count in 50s and 100s

Multiples of 100

Numbers that are multiples of 100 will always end in at least 2 zeros.

100   200   300   400   500   600   700   800   900   1,000   1,100

All of these numbers are multiples of 100

We can see that the number 1,000 has 3 zeros. 

1,000 is a multiple of 100 but it is also a multiple of 1,000 ( 10 x 100 and 1 x 1,000 )

150   210   320   301   30   450   660

We can see that none of the numbers above end in 2 zeros, so they are not multiples of 100.

Multiples of 50

Numbers that are multiples of 50 will always end in either 50 or 00

50   100   150   200   250   300   350   400   450   500   ... 1,000   1,050

All of these numbers are multiples of 50

We can see that the number 1,000 has 3 zeros. 

1,000 is a multiple of 50 but it is also a multiple of 100 and 1,000 (  20 x 50, 10 x 100 and 1 x 1,000 )

170   201   305   455   504   551

We can see that none of the numbers above end in 50 or 2 zeros, so they are not multiples of 50

Why don't you have a go counting in multiples of 50 and 100 - good luck!