German style for writing numbers

Hello, I am looking at lesson 4.2 - In the kitchen (In der Küche) and I didn't like the situation with the numbers in several phrases. I reported one as an error but, as there are several, I thought I would open a discussion. First of all, we write numbers differently 7 has a line through it in German. But that isn't the writing I'm talking about here. I'm talking about writing ten instead of 10. All of the following phrases in the lesson are written well in English, but I want to know if the German is typical. Also, if the writing that is done in a recipe book is different than the writing that would be done in a newspaper, that is what I would like to understand. Here are the phrases from the lesson that I question. I would have spelled out each number. 1 Kilo Mehl? Was kochen wir? - A kilo of flour? What are we cooking? Acht Eier und 4 Gramm Salz. - Eight eggs and four grams of salt. Hier... wir brauchen 1 Kilo Mehl. - Here... we need one kilo of flour Some others appear to be written in the style I expect: Vier Gramm Salz ist nicht viel! - Four grams of salt isn’t much! Haben Sie ein Rezept? - Have you got a prescription? Ich brauche zwei Personen - I need two people So, what is the rule? Anybody know of a link to a style guide in German that is similar to the Elements of Style by Strunk and White (http://en.wikipedia.org/wiki/The_Elements_of_Style)? Thank you, Jason

At the risk of sounding snarky, I expect what you are seeing is just plain careless inconsistency in writing numbers. I have reported literally hundreds of those types of errors which to Rocket's credit, they have always corrected. I've made one complete pass through the lessons but no doubt there are many I've missed. That said, I'm still very positive about Rocket German. Elements of Style, eh. That's a classic which though dated is still relevant. I have a copy on my bookshelf and have actually read it - twice in fact. It's a great reference.

Yeah, I know. They do a good job. I enjoy using the product. But it's not perfect and it's not easy to discuss and correct errors. I think I want the lesson material to be opened in a wiki format for the students to just edit as they go and to provide links to useful material that is relevant for each lesson with a way to vote on ideas so that the best ones rise to the top of the list. I'd like to see the discussions about each lesson on the lesson and not separated in this forum. I'd like to see a user voice area where we can vote on the next development efforts and make suggestions as a community. Any other ideas?