a) ordinal numbers: you should already be familiar with these from 1 up to 12 and be able to use thes ein a sentence
b) multiple numbers: you should already be aware of the terms ending in -plex and how to use these in a sentence
c) numeral adverbs: you should be familiar with the fact that these are not declined and know the following: semel, bis, ter, quater
d) prefixes in compound terms: you should become familiar with basic Latin and Greek prefixes used to denote quantity and be aware of Latin and Greek equivalents with the same meaning, e.g. multi- = poly-, semi- = hemi- etc.
See the section 4.1 of BMT II_handouts and make sure you can explain all the terms given in the example part of the table in section e)