Adding and Subtracting Decimals Videos - Free Educational Videos for Students in K - 12

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This page provides a list of educational videos related to Adding and Subtracting Decimals. You can also use this page to find sample questions, apps, worksheets, lessons , infographics and presentations related to Adding and Subtracting Decimals.


Adding/Subtracting Decimals


By Mathademics

Adding/Subtracting Decimals

Adding and subtracting decimals word problems


By Khan Academy

Let's get fancy and practice adding and subtracting decimals in the same word problem.

Adding and Subtracting Decimals


By TeacherTube Math

This video is from the TeacherTube website and the instructor shows how to add and subtract decimals. She shows how to line up the decimal points in the numbers. Instructor appears to be using computer software for demonstration.

Adding and subtracting decimals word problems


By Khan Academy

Here's a simple word problem asking us to put our adding decimals skill to work. We sound like a broken record, but be sure and ALIGN DECIMALS.

Addition and subtraction with significant figures | Decimals | Pre-Algebra | Khan Academy


By Khan Academy

This video shows us the rules for adding and subtracting measurements to show our level of accuracy. Note that the rules for addition/subtraction with significant figures are VERY different than the rules for mulitplication/division. Think about which number is the most precise!

Subtracting 1 vs. subtracting 10 | Addition and subtraction within 100


By Khan Academy

Sal talks about the difference between subtracting 1 and subtracting 10.

Missing numbers in addition and subtraction | 2nd grade | Khan Academy


By Khan Academy

Sal solves missing number in problems like 73 = ___ + 57.

Relate addition and subtraction


By Khan Academy

See the relationship between 2+3=5, 5-2=3, and 5-3=2.

Addition and subtraction trig identities


By Khan Academy

Sal evaluates the cosine of twice an������������angle whose right triangle is given. To do this, he must use the cosine double-angle formula.

Addition and subtraction trig identities


By Khan Academy

Sal evaluates the cosine of the sum of 60������������ and another angle whose right triangle is given. To do this, he must use the cosine angle addition formula.

Addition and subtraction with number lines


By Khan Academy

Sal figures out which number line matches up with a 2-digit addition or subtraction problem.

More examples of addition and subtraction of polynomials | Algebra II | Khan Academy


By Khan Academy

This instructor in this video, Sal Khan, discusses adding and subtracting polynomials. In an easy, conversational tone, the instructor explains processes clearly. Mr. Khan uses the Paint Program (with different colors) to illustrate his points. Sal Khan is the recipient of the 2009 Microsoft Tech Award in Education. The student or educator may want to open the video to 'full screen' as the instructor is using a black background and the writing is small.

Addition and subtraction trig identities


By Khan Academy

Sal reviews all the different trigonometric angle addition identities: sin(a+b), sin(a-c), cos(a+b), cos(a-b), cos(2a), and sin(2a).

Addition & Subtraction of Mixed Numbers: With Same Denominators


By Red River College -Tutoring

Addition & Subtraction of Mixed Numbers: With Same Denominators

solve word problems using addition and subtraction of fractions


By Kathleen Twyman

how to solve a word problem using addition and subtraction of fractions

Subtracting 1 vs. subtracting 10 | Addition and subtraction within 100 | 2nd grade | Khan Academy


By Khan Academy

Sal talks about the difference between subtracting 1 and subtracting 10.

Matrix addition and subtraction


By Khan Academy

Sal defines what it means to add or subtract matrices. He shows a few examples and discusses some important properties of matrix addition and subtraction.