Khan Academy
Khan Academy: Arithmetic and Pre Algebra: 2 Digit Subtraction
This video shows subtraction of two-digit numbers and place value to tens. [2:54]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Multiplication 6: Multiple Digit
Learn how to multiply multi-digit numbers by watching a video showing several examples. Practice problems are available. [10:27]
CK-12 Foundation
Ck 12: Elem Math: Overview of Subtraction Numbers to 100
[Free Registration/Login may be required to access all resource tools.] The video explains two 2-digit subtraction problems one with regrouping and the other without regrouping.
CK-12 Foundation
Ck 12: Elem Math: Overview of Rounding Decimal Numbers
[Free Registration/Login may be required to access all resource tools.] The video explains using money how to round decimals to the nearest whole number rounding up and rounding down.
CK-12 Foundation
Ck 12: Elem Math: Adding and Subtracting Decimals Word Problems
[Free Registration/Login may be required to access all resource tools.] This is a video that shows how to solve both an addition and subtraction problem with decimals.
CK-12 Foundation
Ck 12: Elem Math: Overview of Subtraction Numbers to 1000
[Free Registration/Login may be required to access all resource tools.] The video explains two 3-digit addition problems one with regrouping and the other without regrouping.
CK-12 Foundation
Ck 12: Elem Math: Overview of Mixed Operations Numbers to 100 Word Problems
[Free Registration/Login may be required to access all resource tools.] The video shows one review problem with mixed operations where students have to add and subtract two-digit numbers.
CK-12 Foundation
Ck 12: Elem Math: Overview of Mixed Operations Numbers to 1000
[Free Registration/Login may be required to access all resource tools.] The video shows one review problem with mixed operations where students have to add and subtract three-digit numbers.
CK-12 Foundation
Ck 12: Elem Math: Overview of Adding and Subtracting 3 Numbers Word Problems
[Free Registration/Login may be required to access all resource tools.] The video shows how to add and subtract three, two-digit numbers.
Math Mammoth
Math Mammoth: Decimal Place Value and Adding Decimals, Up to 2 Decimal Digits
Discusses decimal place value and looks at a misconception students may have about decimal addition and how to clear it up. [8:00]
Math Mammoth
Math Mammoth: Add and Subtract Decimals Mentally (With Up to 3 Decimal Digits)
A lesson in how to add and subtract decimals to the thousandths place using mental math. [10:40]
Math Mammoth
Math Mammoth: Multiplying Decimals by Decimals: Decimals by Whole Numbers
Demonstrates how to multiply a decimal number by a whole number and how to do decimal multiplication by 'scaling' a stick model. [3:43]
Khan Academy
Khan Academy: Subtraction: Introduction to Borrowing or Regrouping
A video covering a review of subtraction using a number line, followed by subtraction of numbers up to three-digits by using borrowing and regrouping.
Khan Academy
Khan Academy: Multiplying by Multiples of 10
Demonstrates how to decompose multiples of 10 and multiply by a 1-digit number. [3:04]
Khan Academy
Khan Academy: Multiply 4 Digit by 1 Digit (Regrouping)
Demonstrates how to multiply a 4-digit number by a 1-digit number when there is regrouping, using the example of 8085 x 9. [3:23]
Khan Academy
Khan Academy: Multiplying 2 Digit Numbers
Demonstrates how to multiply the 2-digit numbers 36 and 27. [4:07]
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: Multiplication Fun: Basic Multiplication
This video starts with a basic review of addition on a number line, followed by introduction of multiplication as grouping and repeated addition.
Khan Academy
Khan Academy: Multi Digit Multiplication: Example: Two Digit Multiplication
This video shows how to round and then multiply two numbers in the context of solving a real-world problem.
Khan Academy
Khan Academy: Adding Decimals With Hundredths
Sal uses an understanding of place value to add decimals, such as 0.68+0.33. [6:56]
Mucho Math
Algebra2go: Digits and Place Value: Part 2
This video will use expanded forms of numbers to help students understand place value. Additionally students will learn how to write numbers as word statements.
Mucho Math
Algebra2go: Rounding Numbers Using a Number Line
The concept of rounding numbers is first demonstrated using a number line. Secondly, the rounding rules are defined.
Khan Academy
Khan Academy: More Advanced Subtraction Strategies With Hundredths
Sal uses place value and numbers in expanded form to subtract decimal to hundredths, such as 8.38-4.54. [5:01]
Khan Academy
Khan Academy: Strategies for Subtracting More Complex Decimals With Tenths
Sal uses place value and decomposing numbers to subtract decimals to the tenths place, such as 2-1.2. [8:45]