Lumos Video Store
This page provides a list of educational videos related to Adding Rational Numbers. You can also use this page to find sample questions, apps, worksheets, lessons , infographics and presentations related to Adding Rational Numbers.
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.
Addition and Subtraction of Rational Numbers (Part 1 of 2)
By MathwithMrAlmeida
Addition and Subtraction of Rational Numbers (Part 1 of 2)
7.NS.A.1b / 7.NS.A.1c - Addition and Subtraction of Rational Numbers (Part 1 of 2)
By MathwithMrAlmeida
Watch Mr. Almeida fully explain how to add and subtract rational numbers using vectors and the concept of a number line.
Adding and subtracting on number line 2 | 2nd grade | Khan Academy
By Khan Academy
Sal adds and subtracts numbers like 585 and 368 using a number line. Numbers used in these problems are less than 1000.
Integer addition and subtraction: number line interpretation
By Khan Academy
Interpreting integer expressions
Addition and subtraction with number lines | 2nd grade | Khan Academy
By Khan Academy
Sal figures out which number line matches up with a 2-digit addition or subtraction problem.
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.
Basic Math For Kids: Addition and Subtraction, Science games, Preschool and Kindergarten Activities
By Kids Educational Games
Annie and Jose have fun with Addition and Subtraction in their new garden. Addition and subtraction are the most basic things of Mathematics. In this basic math video you will learn all the basics of addition and subtraction. Recommended for Grades: K.KidsEducSUBSCRIBE TO US http://goo.gl/3zf4Z3To see the more kids movies go tohttp://www.youtube.com/user/KidsEduc
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).
Subtracting 1 vs. subtracting 10 | Addition and subtraction within 100
By Khan Academy
Sal talks about the difference between subtracting 1 and subtracting 10.
Grade 7 Math - Addition & Subtraction of Rational Numbers
By Lumos Learning
Using the Lumos Study Programs, parents and educators can reinforce the classroom learning experience for children and help them succeed at school and on the standardized tests. Lumos books, dvd, eLearning and tutoring are used by leading schools, libraries and thousands of parents to supplement classroom learning and improve student achievement in the standardized tests.