From McDougal Littell's Heath Passport to Math series---an Integrated Approach, this is the Enrichment Masters, Book 1. 93 pages with answer keys, reproducible. There is a worksheet for each of at least 6 lessons in 12 chapters, and extensions related to teh topic of the lesson. Great supplementary material with other text book series.  I used this with grades 7 and 8.  In excellent condition.