4th Grade Math Workbook - Homeschool Curriculum & Extra Practice for Kids | Addition, Subtraction, Multiplication & Division | Elementary School Learning Activities

This book is absolutely loaded with typographical errors and answers that are incorrect and confusing. I had someone else who is more math-proficient than I am check most of my answers since I couldn't trust the ones in the key. A few of the examples that I found: "It's" consistently used where "its" was correct; p. 41, the wrong answer given for 11 x 11; p. 130, "with" instead of "width;" incorrect answer given for Problem 7, page 133; a correct but arbitrary answer to Problem 6, p.133 (since the question asked for "possible" lengths and widths, the answer should have been any or at least much broader; the answer for Problem 2 on page 134 is given for Answer 3 in the answer key, thus making two problems impossible to correct for certain.