Multiplying Whole Numbers, Part 3: Multiplying a Larger Number by a Single-Digit Number
This clip presents a simple multiplication problem in which a three-digit number is multiplied by a one-digit number. The clip explains that multiplication is essentially a shortcut for what would otherwise be a very laborious addition problem, then...
Multiplying Whole Numbers, Part 2: Summary: Multiplying Whole Numbers, Part Two
This clip summarizes some of the key points about multiplication, touching on the concept of the number line, arrays, and the importance of looking at the units place of products. The clip also points out some of the interesting facts pertaining to ...
Multiplying Whole Numbers, Part 3: Splitting Arrays and Partial Products
This clip explains that the use of smaller arrays and the calculation of partial products provides the easiest way to multiply multi-digit numbers by multi-digit numbers not ending in zero.
Multiplying Signed Numbers: Multiplying Negative Numbers by Negative Numbers
This clip explains that when a negative number is multiplied by another negative number, the product is actually positive.
Multiplying Signed Numbers: Second Exercise in Multiplying Signed Numbers
In this clip, the student utilizes rules taught in the lesson's previous clips to solve problems involving multiplication of signed numbers.
Multiplying Whole Numbers, Part 3: Multiplying by Ten, Twenty, Thirty and Beyond
This clip explains the role that zeroes play in multiplying numbers by 10, 20, 30 and so on.
Multiplying Whole Numbers, Part 3: Review of Previous Multiplication Material
This clip reviews some of the key points from previous multiplication lessons, including expanded notation, the one hundred multiplication facts, and arrays.
Multiplying Whole Numbers, Part 1: Introduction to Multiplication: Factors and Products
This clip explains that multiplication is "a shortcut for addition." It also introduces the concept of factors, and states that the answer in a multiplication problem is known as the "product."
Multiplying Whole Numbers, Part 3: Multiplying by Hundreds, Thousands and Ten Thousands
This clip explains that "
if we multiply a number by 100
we write two zeroes after that number," then goes on to explain the procedure of adding the correct number of additional zeroes when multiplying by a thousand or ten thousand.
Multiplying Rational Expressions
Demonstration of the procedure for multiplying rational expressions.