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This page provides a list of educational videos related to Strategies for Adding and Subtracting Rational Numbers. You can also use this page to find sample questions, apps, worksheets, lessons , infographics and presentations related to Strategies for Adding and Subtracting 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.
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.
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).
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.
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.
Addition and Subtraction of Rational Numbers (Part 1 of 2)
By MathwithMrAlmeida
Addition and Subtraction of Rational Numbers (Part 1 of 2)
Vectors : scalar multiplication, addition and subtraction : ExamSolutions
By ExamSolutions
Youtube Presents Vectors : scalar multiplication, addition and subtraction : ExamSolutions an educational video resources on english language arts.
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!
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.
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
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.
Solving One Step Equations By Addition and Subtraction
By Mathispower4u
Video about solving one step equations by addition and subtraction.
Integer addition and subtraction: find the missing value
By Khan Academy
Sal solves more missing value problems: 4 = -8 - __ ������������and ������������__ - (-2) = -7 ������������and ������������-4 = __ - 9