Help! It's Math(s) - Integer Multiplication e-Book Set

This e-book set consists of a primary instruction e-book and a separate companion notes e-book. The primary e-book has 147 pages, and the companion notes e-book has 101 pages. The e-book set arrives to the buyer as a compressed .zip file. Both the primary e-book and the companion notes e-book are written as Microsoft Word 2007 (.docx) and Portable Document File (.pdf) files. The approximate size of the Zip file is 5 megabytes (5 MB).