HBS Math Support

Decimals

Videos

Graphing tenths – Khan Academy
Graphing hundredths – Khan Academy
Decimal place value - Math Antics
Comparing decimals – Khan Academy
Comparing decimals visually – Khan Academy
Rounding decimals – Khan Academy
Rounding decimal – LearnZillion
Writing numbers as fractions or decimals – Khan Academy
Fraction to decimals - Math Antics
Converting fractions to decimals – Khan Academy
Rewriting decimals as fractions – Khan Academy
Writing decimals and fractions shown on number line – Khan Academy
Explore the relationship between fraction, decimals and percents – PBSy
Add decimals -LearnZillion
Subtract decimals – Khan Academy
Decimal arithmetic - Math Antics
Add and subtract decimals - Math with Mr J

Graphing tenths from 0 to 1 (video) | Khan AcademyLindsay graphs 0.6 on a number line.

Fraction to decimal: 11/25 (video) | Khan AcademySal writes 11/25 as a decimal.

Strategies for subtracting more complex decimals with tenths (video) | Khan AcademySal uses place value and decomposing numbers to subtract decimals to the tenths place, such as 2-1.2.

Graphing hundredths from 0 to 0.1 (video) | Khan AcademyLindsay graphs 0.04 on a number line.

Comparing decimals visually (video) | Khan AcademySal compares 0.17 and 0.2 using grid diagrams.

Rewriting decimals as fractions: 0.15 (video) | Khan AcademyDecimals can be written in fraction form. To convert a decimal to a fraction, place the decimal number over its place value. For example, in 0.6, the six is in the tenths place, so we place 6 over 10 to create the equivalent fraction, 6/10. If needed, simplify the fraction.

Worked example: Rounding decimals to nearest tenth (video) | Khan AcademyLearn to round 9.564 to the nearest tenth.

Explore the Relationship Among Fractions, Decimal Notation, and Percents | PBS LearningMediaIn this Cyberchase media gallery, a series of videos explores the relationships among fractions, decimals, and percents, which can be used to represent the same values in different ways. In the accompanying classroom activity, students shade in parts of squares and rectangles drawn on a piece of graph paper and express the shaded amount in the form of a fraction, a decimal, and a percent. This resource is part of the Math at the Core: Middle School Collection.

Comparing decimals: 9.97 and 9.798 (video) | Khan AcademySal compares 9.97 and 9.798 using place value.

Writing a number as a fraction and decimal (video) | Khan AcademySal shows the connection between decimals and fractions using a grid diagram and number lines.

Writing decimals and fractions shown on number lines (video) | Khan AcademySal writes decimal numbers and fractions greater than 1 shown on number lines. Decimals are limited to tenths and hundredths.

Virtual Manipulatives

Decimal Squares
Decimal Strips – Toy Theater
Number Line, zoomable – Math is Fun

Decimal Strips | Free Virtual Manipulatives | Toy TheaterColorful decimal strips to help students visualize and model decimal relationships.

Practice

Online Gam

Vocabulary

Thousandths
Equivalent

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