Quia
Ixl Learning: What Is a Decimal?
Brush up on your math skills pertaining to decimals then try some practice problems to test your understanding.
Alabama Learning Exchange
Alex: Decimal War
Students will use base 10 manipulatives to build models of decimal numbers. Students will compare decimal numbers. This lesson plan was created as a result of the Girls Engaged in Math and Science, GEMS Project funded by the Malone...
CK-12 Foundation
Ck 12: Arithmetic: Decimals in Words
[Free Registration/Login may be required to access all resource tools.] Understand how to read and write decimals to the ten-thousandths place.
Lesson Tutor
Lesson Tutor: Comparing Decimals
This site is an online lesson plan and practice problems for students learning how to compare two decimal values are provided here. A detailed explanation of both the methods and the practice questions are provided for easy understanding.
Homeschool Math
Homeschool Math: Multiply and Divide Decimals by 10, 100, and 1000
Lesson includes a video & examples showing the common shortcut for multiplying & dividing decimals by powers of ten. [7:59] Provides exercises and word problems for practice.
Houghton Mifflin Harcourt
Houghton Mifflin Harcourt: Saxon Activity Center: Graphing Calculator Activity: The Coordinate Plane [Pdf]
A graphing calculator lesson on coordinate planes. Detailed examples, demonstrations with key functions, and practice problems included. Acrobat Reader required.
CK-12 Foundation
Ck 12: Arithmetic: Decimal Rounding on a Number Line
[Free Registration/Login may be required to access all resource tools.] Round decimals using a number line.
Homeschool Math
Homeschool Math: Comparing Decimals
This is a complete lesson with video instruction [5:49] and varied exercises about comparing decimals with 1 or 2 decimal digits.
abcteach
Abcteach: Teach: Decimals
[Free Registration/Login Required] Educators can generate worksheets for primary or elementary grades that focus on decimal addition, subtraction and fraction practice. Worksheets include graphics and answer key.
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: Add Whole Numbers, Add Decimals
This website explains and defines adding whole numbers and decimals. Content explores addition with regrouping and how to align numbers in a written calculation. There are even practice problems at the end of the lesson.
CK-12 Foundation
Ck 12: Algebra: Scientific Notation
[Free Registration/Login may be required to access all resource tools.] Recognize the equivalence of decimal numbers in standard form, product form and scientific notation using very small and very large numbers
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: Percents Are Ratios
This Math Page tutorial explains how percents are ratios and then features a practice exercise.
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: Multiplying and Dividing by Powers of 10: The Meaning of Percent
This excellent math resource explains and defines the meaning of percent. Multiplying and dividing by a power of 10 is incorporated as a preview to understanding scientific notation.
CK-12 Foundation
Ck 12: Arithmetic: Numbers in Expanded Form
[Free Registration/Login may be required to access all resource tools.] Express decimals in expanded form.
PBS
Pbs: Rounding to Wholes, Tenths, and Hundredths
On some nights only certain numbers can get in to the Number Line Party, what's a decimal to do? This interactive exercise combines activities here appear in two other Number-Line Party lessons and focuses on using what you know about...
Texas Instruments
Texas Instruments: Numb3 Rs: Onion Peeler
Based off of the hit television show NUMB3RS, this lesson introduces students to the concept of changing number bases, as well as gives some insight into Internet privacy through "onion routing." Students translate hexadecimal numbers...
CK-12 Foundation
Ck 12: Measurement: Metric Unit Length Conversions
[Free Registration/Login may be required to access all resource tools.] Convert metric units of length and round to a given place value.
AAA Math
Aaa Math: Subtracting Decimals
This personal site explains how to subtract decimals of the tenths place value. Includes games to practice this skill.