Yes. This workbook plus the main textbook cover 100% of JLPT N5 grammar. However, you may need a separate vocabulary book for the reading section, as the workbook reading is slightly easier than JLPT standards.
: Periodic review sections and a final comprehensive test to evaluate your overall progress. Minna No Nihongo Shokyu 1 Hyojun Mondaishu -workbook- Pdf
If you cannot find or afford this specific workbook, consider these alternatives that offer similar grammar drills: : Periodic review sections and a final comprehensive
As a separate 15-page volume (解答) if downloaded as a collection. Minna No Nihongo Shokyuu 1 Hyoujun Mondai 60-63 - Scribd After completing a lesson's exercises in the main
It sounds like you're looking for the (Standard Problem Collection) workbook PDF.
After completing a lesson's exercises in the main textbook, move to the corresponding chapter in the Hyojun Mondaishu to solidify your understanding. Self-Correction: answer key