Final answer:
Tina will learn a total of 60 new facts after completing 12 chapters if she learns 5 new facts per chapter.
Step-by-step explanation:
To find out how many new facts Tina will have learned after reading all 12 chapters of her social studies textbook, we need to do a simple multiplication. Tina learns 5 new facts in each chapter, and there are 12 chapters in the book. By multiplying the number of facts per chapter by the total number of chapters, we get:
- Number of chapters: 12
- New facts per chapter: 5
- Total new facts: 12 chapters × 5 facts/chapter = 60 facts
Therefore, Tina will have learned a total of 60 new facts when she finishes reading all 12 chapters.