Activity
Homeschool Math

Homeschool Math: Adding and Subtracting Decimals (One Decimal Digit)

For Students 4th - 5th
This is a complete lesson with instruction and a variety of exercises, teaching how to add and subtract decimals with one decimal digit (tenths).
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abcteach

Abcteach: Teach: Decimals

For Teachers 1st - 5th
[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.
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Khan Academy

Khan Academy: Adding Decimals: Thousandths

For Students 6th
Practice adding two numbers that are written to the tenths, hundredths, or thousandths place.
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Khan Academy

Khan Academy: Adding Decimals: Hundredths

For Students 5th
Add two numbers that are written to the ones, tenths, or hundredths place.
Unit Plan
AAA Math

Aaa Math: Rounding Decimals to the Nearest Tenth

For Students 5th - 7th Standards
This lesson from AAA Math explains how to round decimals to the nearest tenth. Gives practice problems and games to test your skills.
Activity
AAA Math

Aaa Math: Multiplying Thousandths by Tenths

For Students 9th - 10th Standards
This site explains how to multiply decimals, thousandths by tenths. Includes games to practice this skill.
Unit Plan
AAA Math

Aaa Math: Tenths as Decimals

For Students 4th - 6th Standards
This site explains how to identify tenths place value. Includes games to practice this skill.
Unit Plan
AAA Math

Aaa Math: Addition of Decimals

For Students 4th - 5th Standards
This lesson explains how to add decimals of the tenths place value. Gives practice and games to work on this skill.
Unit Plan
Khan Academy

Khan Academy: Practice: Write Decimals as Fractions

For Students 3rd - 5th
Practice rewriting decimals as fractions. These problems use decimals with tenths and hundredths. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Khan Academy

Khan Academy: Practice: Multiply Decimals #1

For Students 4th - 5th Standards
Practice multiplying decimals to the tenths place. Includes videos for extra help as well as hints.
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Khan Academy

Khan Academy: Practice: Adding Decimals: Thousandths

For Students 5th - 6th Standards
Practice adding two decimal numbers from the tenths to the thousandths place.
Unit Plan
E-learning for Kids

E Learning for Kids: Math: Carnival Parade in Rio: Fractions

For Students 4th - 6th
Explore equivalent fractions, fractional parts, and decimals as you help Ana make her costume for the carnival parade in Rio.
Interactive
Quia

Quia: Decimal and Whole Number Jeopardy

For Students 3rd - 6th Standards
You can use this web site to compare and round numbers and to also practice rounding whole numbers and decimals. You can just play by yourself or with another player! See how many points you can get.
Whiteboard
ClassFlow

Class Flow: Decimals Addition Subtraction

For Teachers 4th - 6th Standards
[Free Registration/Login Required] In this lesson students will add decimals to the tenths and hundredths place after first learning to line up the decimal. There is also an Activote session integrated into this flipchart.
Activity
AAA Math

Aaa Math: Subtracting Decimals

For Students 9th - 10th
This personal site explains how to subtract decimals of the tenths place value. Includes games to practice this skill.
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Mr. Martini's Classroom

Mr. Martini's Classroom: Decimal Multiplication Math Quiz

For Students 3rd - 8th
Students can test their ability to multiply decimal tenths using this interactive quiz. They can choose to have their quiz graded or select new problems.
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Mr. Martini's Classroom

Mr. Martini's Classroom: Decimal Subtraction Quiz

For Students 3rd - 5th
Learners can test their ability to subtract decimals using this interactive quiz.
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Mr. Martini's Classroom

Mr. Martini's Classroom: Decimal Addition Math Quiz

For Students 3rd - 5th Standards
Learners can test their ability to add decimals using this interactive, graded quiz.
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Math Is Fun

Math Is Fun: Decimal Fractions Worksheets

For Students 3rd - 8th Standards
A collection of worksheets that cover conversion and operations involving "decimal fractions," or fractions that involve "tenths, hundredths, etc., not 1/2, 1/3, etc."
Website
PBS

Pbs Learning Media: Several Short Rails Make More Than a Whole

For Students 3rd - 8th
In this video segment from Cyberchase, Hacker has sabotaged another section of the Madre Bonita Express track; Digit gets help from Deci in adding decimals to find the right size rail that will repair the track.
Unit Plan
PBS

Pbs Learning Media: Rounding to Whole Numbers

For Teachers 3rd - 5th Standards
This interactive lesson focuses on using what you know about number lines and rounding from the tenths place to make decimals whole numbers and then asks you to explain your reasoning to show comprehension.
Interactive
Math Slice

Math Slice: Place Value

For Students 3rd - 5th Standards
A game matching the digit in a number to the correct place value. Place value includes whole numbers to the millions and decimals.
Activity
NumberNut

Number Nut: Estimate and Round Why Is This Important?

For Students 3rd - 7th
Problem solving will become a little easier when you understand the concepts of estimation and rounding. Explore how these concepts are used in mathematics and real world applications. Detailed examples and links to related games...
Handout
Purple Math

Purplemath: Rounding Numbers

For Students 3rd - 5th Standards
Reviews how to round numbers to a given place or number of decimal places.

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