Math Mammoth Decimals 2 is a book about decimal place value and the four operations with decimals. It is most suitable for 5th and 6th grade.
The PDF version of this book is enabled for annotation. This means that if you prefer, your student can fill it in on the computer, using the typewriter and drawing tools in Adobe Reader version 9 or greater.
The book starts with a short review of previously learned concepts (from Math Mammoth Decimals 1): place value with tenths and hundredths, and adding and subtracting decimals that have tenths and hundredths.
The rest of the book is spent learning the four operations of decimals with numbers that have up to three decimal digits, and especially concentrating on decimal multiplication and division. We start by learning place value, comparing, and rounding decimals (tenths, hundredths, and thousandths). After that follow addition and subtraction, and then various multiplication and division topics.
I've strived to emphasize mental calculations based on conceptual understanding of decimals, and for that end the text also often includes little tips or "tricks" that help with mental calculations. Along with all that, the book naturally has lessons on long multiplication and long division with decimals. Problems that show a little calculator picture are meant to be solved with the help of a calculator. Otherwise, a calculator should not be allowed.
The last lessons deal with problem solving, and as such could be included in some other course of study. They are included here since the problems involve the usage of decimal numbers, and also because the material for this book is taken from the 3rd chapter of Math Mammoth Grade 5-A Complete Worktext, which includes those problem solving lessons.
After this book, the student should understand how to perform all of the four operations with decimals. However, please note that this book does not practice these operations with decimals that have more than 3 decimal digits. Students in 6th grader or higher should also practice decimal arithmetic with such longer decimals. For fifth grade, I feel the coverage in this book is sufficient.
You can make additional supporting worksheets on this page. Scroll down to the "Decimals" section.
Better Yet - Bundle Deals!
Blue Series - $105 (download) or $110 (CD)
Blue Series for grades 1-3 - $42 (download)
Blue Series for grades 4-6 - $63 (download)
Light Blue Series - $150 (download) or $155 (CD)
Light Blue Series for grades 1-3 - $75 (download)
Light Blue Series for grades 4-6 - $75 (download)
Golden/Green Series - $65 (download) or $70 (CD)
All Inclusive - $211 (download) or $216 (CD)
"Everything" Bundle - $276 (download only)
Learn more about these Math Mammoth bundles!
*BONUS*: Buy any bundle listed above, and get the fully upgraded Soft-Pak software with more features and options for FREE (includes 4 math, 1 language arts, 2 testing programs).
Maria's Math News
This is my newsletter that comes out about once or twice a month. Peek at the previous volumes here.
You will receive:An initial email to download a GIFT of over 350 free worksheets and sample pages from my books; Maria's Math News: my newsletter filled with math teaching resources, news, downloads, humor, and giveaways. The content is equally good for all of us who teach math.
Math Mammoth Tour
Confused about the different options? Take a 7-day virtual email tour around Math Mammoth! You'll receive:An initial email to download your GIFT of over 350 free worksheets and sample pages from my books; 6 other emails on 6 subsequent days that describe the different series of Math Mammoth products, answering the most commonly asked questions, including "What is the difference between all these different-colored series?"
This way, you'll have time to digest the information over one week, plus an opportunity to ask me personally which book would be right for your child or students.
"Mini" Math Teaching Course
This is a little "virtual" email course. You will receive:An initial email to download your GIFT of over 350 free worksheets and sample pages from my books; 7 articles on important topics on mathematics education, including: multiplication tables, fractions, how to help a student who is behind, and the value of mistakes; 1 email about Math Mammoth books.
Note: You will FIRST get an email that asks you to confirm your email address. PLEASE check also your SPAM/JUNK folder for this confirmation email.
© 2006-2014 MathMammoth.com