Lesson 5 introduces Japanese counters and how to ask "how many" using nan/なん with counter suffixes like -bon, -satsu, and -mai. It also explains that ikutsu/いくつ can be used without a counter if the specific counter is unknown. Two charts are provided showing how numbers from 1 to 10 and counters change sounds depending on their combination, with notes on optional and no sound changes.

1. Lesson 5
Numbers
Counters

2. go-hon

3. nan／なん is used with a counter suffix
and means how many .
Ex. なんぼん、なんさつ、なんまい
However, if you don t know the counter,
you can ask as ikutsu／いくつ without
any counter.
nan／なん counter
n a n - b o n nan-satsu n a n - m a i
+
Following 2 charts show how sounds in
numbers ( 1 - 10 ) and counters change
according to their combination.
1. ( ) means that the change is optional.
2. An empty box means no sound change
occurs.