25118
So far I've only learned how to use numbers in the context of counting e.g.
このピザは 5枚ある (this pizza has five slices).

How do I express it in the following way:

> This is a **five-slice pizza**

I would naively guess at "これは5枚のピザがある”, but I've not seen a counter used to
modify a noun like that before.

Secondly, kind-of in the reverse direction how would I express the part in
bold below:

> (Please exit from) **the front five coaches** of this ten coach train

Hmm, I tried to construct this sentence but it just made me more sure that my
guess for the first part of the question was wrong.
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2015-06-17T18:46:04.673
25112
2015-06-17T22:47:36.397
7944
question
grammar counters
Use of numbers in descriptions
(Though I don't know if this answers your question:)

> This is **a five-slice pizza**.

You normally say it as:

> これは、 **５枚[切]{ぎ}りの** ピザです。  
>  or  
>  このピザは、５枚切りです。

* * *

> (Please exit from) **the front five coaches** of this ten coach train.

I think you'd normally say it as:

> １０[両]{りょう}[編成]{へんせい}の電車の **[前]{まえ}５両** / **前の５両** (から降りてください。/ 下車してください。/
> お降りください。)
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2015-06-17T22:13:59.947
25118
2015-06-17T22:47:36.397
2015-06-17T22:47:36.397
9831
9831
25112
answer