Lumos Video Store
This page provides a list of educational videos related to 7.NS.A.2.A. You can also use this page to find sample questions, apps, worksheets, lessons , infographics and presentations related to 7.NS.A.2.A.
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.
Additive inverse and distance between two points on a number line
By Don't Memorise
Absolute value of their difference
Rational Numbers As Quotients of Integers
By Anil Kumar
every quotient of integers is a rational number.
Multiplying and dividing negative numbers
By Khan Academy
Find the product of numbers with different signs.
Multiplying and dividing negative numbers
By Khan Academy
Use the distributive property to understand the products of negative numbers.
Multiplying and dividing negative numbers
By Khan Academy
Use the repeated addition model of multiplication to give an understanding of multiplying negative numbers.
Multiplying and dividing negative numbers
By Khan Academy
Learn some rules of thumb for multiplying positive and negative numbers.
Multiplying and dividing negative numbers
By Khan Academy
Discover the basics of dividing with negative numbers.������������
Division of Rational Numbers
By Khan Academy
This video walks through the division of 4-5 rational numbers and includes a word problem.
Order of operations with negative numbers
By Khan Academy
Work through another challenging order of operations example with only positive numbers.
Order of operations with negative numbers
By Khan Academy
This example clarifies the purpose of order of operations: to have ONE way to interpret a mathematical statement.
Order of operations with negative numbers
By Khan Academy
Simplify this tricky expression using the order of operations. ������������ Expression include negative numbers and exponents.
Fractional Exponent Expressions 2
By Khan Academy
Fractional Exponent Expressions 2. All Khan Academy content is available for free at www.khanacademy.org
Converting fractions to decimals
By Khan Academy
This is a great example of converting a fraction to a decimal. Use a scratch pad so you can follow along.
Converting fractions to decimals
By Khan Academy
Sometimes when you convert a fraction to a decimal you have to do some long division and rounding.
Comparing rational numbers
By Khan Academy
Converting fractions to decimals sometimes requires us to brush up on our long division skills. We'll walk you through it.
Classifying numbers
By Khan Academy
Learn how to classify numbers as whole numbers, integers, rational numbers, and irrational numbers.