The textbook heavily promotes the use of estimation. When the answer key shows an exact fraction or decimal, compare it to the rough mental estimate made before calculating to build stronger number sense. Where to Find the Answers
If your answer matches the book, you are doing great. If your answer is different, do not just erase it. Look at your steps to see where you made a mistake. Find the Pattern
The textbook heavily promotes the use of estimation. When the answer key shows an exact fraction or decimal, compare it to the rough mental estimate made before calculating to build stronger number sense. Where to Find the Answers
If your answer matches the book, you are doing great. If your answer is different, do not just erase it. Look at your steps to see where you made a mistake. Find the Pattern