A large collection of links to interactive activities and games on the topic of decimals.

Find a quick, concise explanation of how to round decimals. An example is given and clearly explained.

The CyberSquad adds decimals to figure out how many rails they need to build a detour that will help them go around a mountain in this Cyberchase video segment.

This Math Page tutorial explains how percents are ratios and then features a practice exercise.

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.

Test your knowledge of decimal numbers. Final score will be given in each section.

Find out how well you know the decimal system. Final score will be given in each section.

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...

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...

[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

A calculator based on the compound interest formula that can be used to determine the Present Value, the Future Value, the Interest Rate, or the Number of Periods. You can select the type of compounding, the effective annual rate, and...

Take this test to test your knowledge of: decimal place value, addition and subtraction of decimals. Final score will be given at the end.

Rounding calculator teaches how to round numbers up or down to any decimal place. Choose ones to round a number to the nearest dollar. Choose hundredths to round an amount to the nearest cent.

Use this rounding calculator to round a number to the nearest multiple. You can round a number up or down to the nearest 2, 4, 5, 10, 50, etc. You can also round to the nearest tenth, hundredth, thousandth, etc. multiple in a decimal place.

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.

Get ready for your Praxis Core Math test with this lesson over naming and ordering numbers. You will review the skills being tested for this topic and complete practice problems.

Find a quick, concise explanation of the names of large numbers all listed in a table. Other interesting tidbits of information about the names of larger numbers are also included. Names of decimals numbers are also included at the end...

[Free Registration/Login may be required to access all resource tools.] Convert metric units of length and round to a given place value.

Finish the equations to make true statements. The student must really think to encode the quantity in positional notation. Aligns with 4.NF.C.5.

This personal site explains how to subtract decimals of the tenths place value. Includes games to practice this skill.

This online calculator converts a percent to a fraction. If the percent value is greater than 100% it is converted into a mixed number fraction. Enter percents to convert them into fractions. The number you enter can also have decimal...

Questions are provided to review decimals in expanded form. Immediate feedback is given and hints or a video are available if needed.

Review how to write decimals in expanded form, then attempt some practice problems.

Studyladder:Multiplying decimals by 10 is an interactive learning activity.