# Estimate the Product of Mixed Numbers

## By MathwithMrAlmeida

Use your number sense to estimate what the product will be. A great skill to have to check your work!

# Estimating Products | MathHelp.com

## By MathHelp.com

This lesson covers perimeter. Students learn that the perimeter of a figure is the distance around the figure, so the perimeter of a figure can be found by adding the lengths of its sides. Since all four sides of a square are equal in length, the perimeter of a square that has a side with a length of 8 feet is 8 + 8 + 8 + 8, or 32 feet. Since opposite sides of a rectangle are equal in length, the perimeter of a rectangle that is 4.5 meters by 6.2 meters is 4.5 + 4.5 + 6.2 + 6.2, or 21.4 meters.

# 8th Grade Math | MathHelp.com

## By MathHelp.com

This lesson covers estimating products. Students learn to estimate a product or quotient by first rounding each number to one non-zero digit. For example, to estimate 8,291 x 27, first round 8,291 down to 8,000, and round 27 up to 30, then multiply 8,000 x 30 to get 240,000.

# Complex Numbers In Polar Form De Moivre's Theorem, Products, Quotients, Powers, and nth Roots Prec

## By The Organic Chemistry Tutor

This precalculus video tutorial focuses on complex numbers in polar form and de moivre's theorem. It explains how to find the products, quotients, powers and nth roots of complex numbers in polar form as well as converting it to and from rectangular form. This video contains plenty of examples and practice problems and is useful for high school and college students taking precalculus or trigonometry. Here is a list of topics: 1. Graphing / Plotting Complex Numbers in a Complex Plane 2. Real Axis vs Imaginary Axis 3. How To Find The Absolute Value of a Complex Number 4. Complex Numbers - Rectangular Form to Polar Form 5. Converting Complex Numbers in Polar Form To Rectangular Form 6. Complex Numbers - List of Equations and Formulas 7. Finding R and Angle Theta From a and b 8. Writing Complex Numbers In Rectangular Form 9. Product of Two Complex Numbers In Polar Form Equation 10. Quotient of Two Complex Numbers In Polar Form Formula 11. Finding Products of Complex Numbers in Polar Form 12. Finding Quotients of Complex Numbers in Polar Form 13. Powers of Complex Numbers in Polar Form 14. De Moivre's Theorem - Roots of Complex Numbers in Polar Form 15. Solving Equations With Complex Numbers 16. Adding Complex Numbers in Polar Form 17. Multiplying Complex Numbers in Polar Form 18. Dividing Complex Numbers in Polar Form

# Finding Products of Polynomials

## By gdawgrapper

Finding Products of Polynomials

# Introduction to special products of binomials | Algebra I | Khan Academy

Khan Academy presents Special Products of Binomials, an educational video resource on math.

# Imaginary Numbers | MathHelp.com

## By MathHelp.com

This lesson covers estimating quotients. Students learn to estimate a product or quotient by first rounding each number to one non-zero digit. For example, to estimate 8,291 x 27, first round 8,291 down to 8,000, and round 27 up to 30, then multiply 8,000 x 30 to get 240,000.

# Find special products of binomials (basic)

Sal expresses (x+7)^2 as x^2+14x+49 and discusses how the general square (x+a)^2 can be written as x^2+2ax+a^2.

# Find special products of binomials (basic)

Sal expresses (x+3)(x-3) as x^2-9 and discusses how the general form (x+a)(x-a) can be written as x^2-a^2 (this is called difference of squares).

# Linear transformations as matrix vector products | Linear Algebra | Khan Academy

This video lecture series on Introduction to Linear Algebra from Khan Academy includes Introduction to Matrices, Matrix Multiplication, Inverse Matrix, Matrices to solve a system of equations, Matrices to Solve a Vector, Singular Matrices, 3-Variable Linear Equations.....

# Ms. Chang 4th Grade- Divide with partial quotients

## By Ms Chang

Find whole-number quotients and remainders with up to four-digit dividends and one-digit divisors, using strategies based on place value, the properties of operations, and/or the relationship between multiplication and division

# Four-Digit by One Digit Division (Equal Groups/Partial Quotients): Grade 4

## By University Of Houstan Mathematics Education

Find whole-number quotients and remainders with up to four-digit dividends and one-digit divisors, using strategies based on place value

# Box Multiplication: Partial Products

## By Erica Carmody

Multiply a whole number of up to four digits by a one-digit whole number, and multiply two two-digit numbers, using strategies based on place value and the properties of operations

# Find special products of binomials (advanced)

Sal finds the area of a square with side (6x-5y).

# Linear transformations as matrix vector products | Linear Algebra | Khan Academy

This video lecture series on Introduction to Linear Algebra from Khan Academy includes Introduction to Matrices, Matrix Multiplication, Inverse Matrix, Matrices to solve a system of equations, Matrices to Solve a Vector, Singular Matrices, 3-Variable Linear Equations.....

# Partial-Products 2-Digit: Example 2

Showing multiplication of 2 digit numbers by 2 digit numbers.

# Find special products of binomials (advanced)

Sal gives numerous examples of the two special binomial product forms: perfect squares and the difference of two squares.

# Three-Digit by One Digit Multiplication with Partial Products: Grade 4

## By University Of Houstan Mathematics Education

Multiply a whole number of up to four digits by a one-digit whole number, and multiply two two-digit numbers

# Math 8 Honors: Chapter 8- Section 5: Factoring Special Products

## By Megan Frantz

Math 8 Honors: Chapter 8- Section 5: Factoring Special Products