What ways can I make 49 as tens and ones

Here is a few:

1 - 4 tens 9 ones

2 - 3 tens 19 ones

3-2 tens 29 ones

4 - 1 ten 39 ones

5 - 0 tens 49 ones

- - No tens plus 49 ones.

- - One ten plus 39 ones.

- - Two tens plus 29 ones.

- - Three tens plus 49 ones/

==> Four tens plus 9 ones.

- - Five tens minus a single one.

- - Six tens minus 11 ones.

- - Seven tens minus 21 ones.

- - Eight tens minus 31 ones.

.

.

etc.

The heavy one is the way we actually write it.

That's what the digits '4' and '9' mean.