Khan Academy
Khan Academy: Adding & Subtracting Negative Numbers
Demonstrates with the help of a number line how to add and subtract 1-digit negative numbers. [4:06]
Khan Academy
Khan Academy: Worked Example: Long Division With Remainders
Presents several examples of how to use long division to divide a 1-digit number into large numbers. [10:07]
Khan Academy
Khan Academy: Adding Negative Numbers Example
Demonstrates how to use a blank number line to visualize how to add three 2-digit negative numbers. [5:41]
Math Playground
Math Playground: How Do You Multiply Decimals?
This video illustrates how to multiply numbers with digits to the right of the decimal point.
Khan Academy
Khan Academy: Addition and Subtraction With Number Lines
Given a 2-digit addition or subtraction problem, video demonstrates how to decide which number line matches up with it. [1:56]
Khan Academy
Khan Academy: Decimal Place Value
Video lecture offers an introduction to decimal place values and the value of decimal digits. [3:59]
Crash Course
Crash Course Computer Science #1: Early Computing
This video focuses on the early efforts of computing. Welcome to Crash Course Computer Science! Today, we're going to take a look at computing's origins, because even though our digital computers are relatively new, the need for...
CK-12 Foundation
Ck 12: Elem Math: Finding the Maximum Number Given a Statement
[Free Registration/Login may be required to access all resource tools.] Video demonstrating how to find the highest number that would make a division statement true when one of the digits is unknown. [1:32]
CK-12 Foundation
Ck 12: Elem Math: Finding the Minimum Number Given a Statement
[Free Registration/Login may be required to access all resource tools.] Video explaining how to find the smallest digit missing in a number that will make the given statement about the quotient true. [1:20]
CK-12 Foundation
Ck 12: Elem Math: Finding the Missing Number
[Free Registration/Login may be required to access all resource tools.] Video explaining how to find the digit missing in a number that will make the given statement about the quotient true. [1:58]
CK-12 Foundation
Ck 12: Elem Math: Overview of Addition (Sums to 1,000)
[Free Registration/Login may be required to access all resource tools.] Video demonstrating how to add two 3-digit numbers vertically with no regrouping. [1:04]
CK-12 Foundation
Ck 12: Elem Math: Overview of Subtraction (Numbers to 1,000)
[Free Registration/Login may be required to access all resource tools.] Video demonstrating how to subtract two 3-digit numbers vertically with and without regrouping. [1:14]
CK-12 Foundation
Ck 12: Elem Math: Overview of Decimal Multiplication
[Free Registration/Login may be required to access all resource tools.] Video demonstrating how to multiply two decimal numbers together. Shows examples using numbers with 1 to 4 digits after the decimal point. [1:44]
Khan Academy
Khan Academy: Prime Factorization: Prime Factorization
This video shows how to find the prime factorization of a two-digit number and write the answer in exponential notation.
Khan Academy
Khan Academy: Bit Zee Bot: 1. Bit Zee
Bit-zee is a project designed to inspire students to explore math and science. It was created from everyday items (a hair dryer, tap light, alarm clock, digital camera, and a universal remote). See the following link for help with the...
Khan Academy
Khan Academy: Divisibility Tests: The Why of the 3 Divisibility Rule
Why you can add the digits to see if something is divisible by 3.
Khan Academy
Khan Academy: Divisibility Tests: The Why of the 9 Divisibility Rule
Why you can test divisibility by 9 by just adding the digits.
Imagine Learning Classroom
Learn Zillion: Check Your Answer to an Addition Problem: Using Rounding (1)
This is the first of two lessons in which you will learn how to check your answer to an addition problem by using rounding. This lesson deals with addition problems involving numbers with the same number of digits. [3:34]
Imagine Learning Classroom
Learn Zillion: Check Your Answer to a Subtraction Problem: Using Rounding (1)
This is the first of two lessons in which you will learn how to check your answer to a subtraction problem by using rounding. This lesson deals with subtraction problems involving numbers with the same number of digits. [4:20]
Imagine Learning Classroom
Learn Zillion: Check Your Answer to an Addition Problem: Using Rounding (2)
This is the second of two lessons in which you will learn how to check your answer to an addition problem by using rounding. This lesson deals with addition problems involving numbers with different numbers of digits. [4:13]
Imagine Learning Classroom
Learn Zillion: Check Your Answer to a Subtraction Problem: Using Rounding (2)
This is the second of two lessons in which you will learn how to check your answer to a subtraction problem by using rounding. This lesson deals with subtraction problems involving numbers with different numbers of digits. [4:42]
Imagine Learning Classroom
Learn Zillion: Check Your Answer to a Multiplication Problem: Using Rounding (1)
This is 1 of 2 lessons in which you will learn how to check your answer to a multiplication problem by using rounding. This lesson deals with multiplication problems involving single-digit products. [4:11]
Khan Academy
Khan Academy: Bit Zee Bot: 29. Camera Wiring Update
This video shows you how to reduce the complexity of your Bit-zee while improving the speed of your Bit-zee digital camera. [3:20]
Imagine Learning Classroom
Learn Zillion: Divide by Powers of 10
In this lesson, you will learn about the relationship between digits on a place value chart by dividing by powers of 10. [6:08]
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