Fractions has 32 chapters and Decimals and Percents has 33 chapters. Each chapter is considered a lesson and after each five lessons are Bridges, which are reviews or tests or whatever you want to consider them. The student must get 9 out of 10 of the questions right in order to move on to the next chapter. There are five Bridges so that if they don't pass on the first one they have four more tries.
Depending on your student's abilities, both books could be done in one year. If your child has trouble with Fractions, then by all means repeat the book and wait until the following year to do the Decimals and Percents book.
The Fractions book covers all things fractions - adding, subtracting, multiplying and dividing. In fact, it even really explains to you WHY you flip a fraction and multiply when you are trying to divide them! That was an eye-opener for me, let me tell you!
The Decimals and Percents book does a great job covering those two topics, as well as area, circumference, graphs, sets and other great topics.
Like all of the books, there are many fun tidbits of non-math information thrown in to give the whole series a "unit study" feel to it.
Here are some sample problems:
The garbage can was starting to fill up with empty spice bottles that Fred was throwing away. If it was 7/16 full, what fraction of the garbage can was empty?
If Fred started with 7/8 lb. of mutton and had chopped off 1/5 lb. how much would have been left?
If Fred is saving his money at the rate of $1.47 per week, how much will he have saved in 52 weeks?
Fred spotted some leather bookmarks for sale. They were priced at $8.61 for 7 of them. How much would 11 of them cost?
If you are interested in seeing the exact content of each of these books, or if you would like to go ahead and order some, you can go to my website and get all of the information you need as well as the ordering information. If you have any questions, feel free to contact me.