Divide by 3 Videos - Free Educational Videos for Students in K - 12

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This page provides a list of educational videos related to Divide by 3. You can also use this page to find sample questions, apps, worksheets, lessons , infographics and presentations related to Divide by 3.


Dividing Integers | MathHelp.com


By MathHelp.com

This lesson covers basic subtraction in the form of subtracting whole numbers. Students learn to subtract numbers with two or more digits, such as 985 - 47. The first step is to line up the numbers vertically so that the units digits are in the same column. Next, subtract the units digits, the tens digits, and the hundreds digits. When subtracting the units digits, notice that it is not possible to subtract 7 ones from 5 ones, so 1 ten must be borrowed from the tens column, leaving 7 tens and 15 ones. Now, subtracting the units digits, 15 - 7 = 8, subtracting the tens digits, 7 - 4 = 3, and subtracting the hundreds digits, 9 - 0 = 9. So 985 - 47 = 938. Note that the answer to a subtraction problem is called the difference, so the difference of 985 - 47 is 938.

Dividing decimals 3


By Khan Academy

The old saying is practice makes perfect. Let's keep practicing dividing decimals and making our divisor a whole number.

Dividing decimals 3


By Khan Academy

Long division with decimals

Dividing decimals 3


By Khan Academy

Let's do one more decimal division problem together but change it up. This is one with a decimal divisor and will require you to shift the decimal first.

DEPRECATED Dividing polynomials by binomials 3


By Khan Academy

Sal solves the following problem:������������Given a rectangle with length a^2+6a+27 and width a^2-9, write the ratio of the width to the length as a simplified rational expression.

DEPRECATED Dividing polynomials by binomials 3


By Khan Academy

Sal������������simplifies and states the domain of (x^2-36)/(6-x).

DEPRECATED Dividing polynomials by binomials 3


By Khan Academy

Sal explains what it means to simplify a rational expression and why we would want to do that. Just don't forget the excluded values!

DEPRECATED Dividing polynomials by binomials 3


By Khan Academy

Sal������������simplifies and states the domain of (2x^2+13x+20)/(2x^2+17x+30).

Divide polynomials by polynomials with remainders


By Khan Academy

Sal divides (x^3+5x-4) by (x^2-x+1) using long division.

Divide polynomials by linear binomials with remainders


By Khan Academy

Sal divides (x^3+5x-4) by (x^2-x+1) using long division.

LONG DIVISION EXPLAINED | Divide 207 by 3


By TucsonMathDoc

I make short videos so learning math can be easy and fun.

eSpark Learning: Dividing Fractions Instructional Video (5.NF.3)


By eSparkLearningVideos

This eSpark Learning instructional video aligns with Common Core State Standard 5.NF.3: interpret a fraction as division of the numerator by the denominator. Solve word problems involving division of whole numbers leading to answers in the form of fractions or mixed numbers.

Dividing complex numbers | Imaginary and complex numbers | Precalculus | Khan Academy


By Khan Academy

Here we see a guided example of how to divide two complex numbers. Remember to use the complex conjugate of the denominator. The whole point is to make the denominator into a real number, so if that doesn't happen, go back and check over your work very carefully.

Use the Polynomial Remainder Theorem to analyze factors of polynomials


By Khan Academy

Sal finds the remainder of (-3x^3-4x^2+10x-7) divided by (x-2) using the PRT (Polynomial Remainder Theorem).

Math Ratios | MathHelp.com


By MathHelp.com

This lesson covers adding decimals. Students learn to add decimals by first lining up the decimal points, then adding the numbers by column. For example, to add 14.2 + 2.86, first line up the decimal points, then add the digits in the hundredths column, to get 0 + 6, or 6, then add the digits in the tenths column, to get 2 + 8, or 10, so write a 0 in the tenths column and carry the 1 to the units column, then add the digits in units column, to get 1 + 4 + 2, or 7, then add the digits in the tens column, to get 1. So 14.2 + 2.86 = 17.06.