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Corbettmaths: Videos and Worksheets for Math
Click on Videos to find Videos and Workshops for math videos, practice questions, and textbook exercises for math. It includes shapes, addition, algebra, Algebraic fractions, Angles, Area, Averages, and much more. Answers are provided.
Mucho Math
Algebra2go: Rounding Numbers Using a Number Line
The concept of rounding numbers is first demonstrated using a number line. Secondly, the rounding rules are defined.
Khan Academy
Khan Academy: Conceptualizing Decimals and Place Notation: Decimal Place Value 2
This video covers the decimal place value.
Khan Academy
Khan Academy: Rounding Whole Numbers: Rounding Whole Numbers 2
This video demonstrates rounding a 6-digit number to the nearest thousand.
Khan Academy
Khan Academy: Conceptualizing Decimals and Place Notation: Decimal Place Value
A video about decimal place value.
Khan Academy
Khan Academy: More Advanced Subtraction Strategies With Hundredths
Sal uses place value and numbers in expanded form to subtract decimal to hundredths, such as 8.38-4.54. [5:01]
Khan Academy
Khan Academy: Strategies for Subtracting More Complex Decimals With Tenths
Sal uses place value and decomposing numbers to subtract decimals to the tenths place, such as 2-1.2. [8:45]
Khan Academy
Khan Academy: Decimals on a Number Line
Conceptualizing decimals and place notation: decimals on a number line.
Khan Academy
Khan Academy: Strategies for Subtracting More Complex Decimals With Tenths
Sal uses place value and decomposing numbers to subtract decimals to the tenths place, such as 2-1.2.
Khan Academy
Khan Academy: Strategies for Subtracting Basic Decimals
Sal uses place value and a number line to subtract decimals, such as 1.5-0.7.
Khan Academy
Khan Academy: Rounding Decimals on the Number Line
Use number lines to round decimals to the nearest tenth, hundredth, or thousandth.
Khan Academy
Khan Academy: Place Value With Decimals
Sal uses an understanding of place value to introduce decimals place values.
Khan Academy
Khan Academy: Ordering Decimals Through Thousandths
Sal orders four decimals with digits through the thousandths.
Khan Academy
Khan Academy: Regrouping With Decimals: 21.3
Sal regroups 21.3 into various addition problems.
Khan Academy
Khan Academy: Adding Decimals With Ones and Tenths Parts
Sal uses an understanding of place value to add decimals, such as 4+5.7.
Khan Academy
Khan Academy: Adding Decimals With Hundredths
Sal uses an understanding of place value to add decimals, such as 0.68+0.33.
Khan Academy
Khan Academy: Adding Decimals With Ones, Tenths and Hundredths
Sal adds numbers, such as 3.53+4.72, by breaking them down into place values.
PBS
Pbs: Building Deeper Understanding of Decimal Numbers
Steve Hinds demonstrates how a brief discussion of money and decimals can help students to shed common misconceptions about decimal place value.
PBS
Pbs: Odd Squad: Gino Disappears
Learn about rounding with the Odd Squad. A round table at the Confalones' restaurant is adding and subtracting whatever is placed on top of it. When Gino Confalone touches the table, he disappears! Olive and Otto visit the Mathroom to...
PBS
Pbs: Odd Squad: Meatball Mountain
Otto shows the Confalones how to round numbers up or down using spaghetti and meatballs.
Khan Academy
Khan Academy: Estimating Decimal Multiplication
Estimate to find reasonable solutions to multiplication division problems.