Help your students prepare for the Math portion of the ACT Test with original Integrating Essential Skills (IES) questions. These 36 questions feature a range of skills, question types, and modeling contexts that the ACT expects students to master: rates, ratios, proportions, percent change, area and volume, unit conversion, scientific notation, and more. A key with answers, solution methods, and question types is included along with solved versions of every question.IES questions compose about