Instructional Video5:33
Curated Video

Finding the Area of Polygons by Decomposing

K - 5th
In this video, the teacher explains how to find the area of polygons by breaking them down into familiar shapes such as triangles, rectangles, parallelograms, and trapezoids.
Instructional Video6:03
Curated Video

Dividing Two-Digit Numbers by Two-Digit Numbers, and Three-Digit Numbers by Two-Digit Numbers with Remainders

3rd - Higher Ed
Mr. Addit reviews the process for dividing 2-digit numbers by 2-digit numbers and 3-digit numbers by 3-digit numbers with remainders.
Instructional Video3:41
Curated Video

Regrouping and Carrying

3rd - Higher Ed
The video “Regrouping and Carrying” explains how to use regrouping and carrying as part of the standard algorithm for adding two- and three-digit numbers.
Instructional Video6:40
Curated Video

Multiplying Three-Digit Numbers by Two-Digit Numbers with Regrouping

3rd - Higher Ed
Mr. Addit reviews multiplying 2-digits by 2-digits with regrouping. He then demonstrates the method for multiplying 3-digits by 2-digits with regrouping and stresses the importance of being careful about putting numbers in their proper...
Instructional Video6:15
Curated Video

Regrouping and Carrying

K - 8th
Mr. Addit reviews the terms regrouping and carrying. He then shows examples of adding two two-digit numbers and two three-digit numbers to give examples of regrouping and carrying.
Instructional Video5:49
Curated Video

Review for You: Regrouping

3rd - Higher Ed
Mr. Addit reviews the method of using regrouping and carrying to add 2, 2-digit numbers and 2, 3-digit numbers. He reviews the method of regrouping and borrowing to subtract 2, 2-digit numbers and 2, 3-digit numbers.
Instructional Video6:51
Curated Video

Review for You: Multiplying with Regrouping

3rd - Higher Ed
Mr. Addit reviews multiplication of 2 digits by 1 digit, 3 digits by 1 digit, 2 digits by 2 digits, and 2 digits by 3 digits.
Instructional Video15:37
Homeschool Pop

Double-Digit Addition for Kids

Pre-K - 6th
Learn double-digit addition and regrouping in this video for kids! You will discover how to add bigger numbers together in this exciting math video. We review basic addition and show how simple and fun adding large numbers can be! 💙...
Instructional Video6:47
Curated Video

Review for You: Division

3rd - Higher Ed
Mr. Addit reviews division of 2 digits by 1 digit, 2 digits by 2 digits, and 3 digits by 2 digits. He demonstrates division problems with remainders, and checks his division work by using multiplication.
Instructional Video
Curated OER

Singapore Math: Grade 3a, Unit 2 (Part 3)

3rd
Using three-digit numbers, this video discusses the process used to add and subtract with regrouping. The instructor also focuses on determining when and when not to regroup. It describes precisely what is happening when a problem...
Instructional Video
Khan Academy

Khan Academy: Adding 3 Digit Numbers (No Regrouping)

2nd - 4th
Sal visually demonstrates how to add 327 + 251 (without regrouping) using place value. Includes a video, transcript, and question and answer section. [2:39]
Instructional Video
Khan Academy

Khan Academy: Using Place Value to Add 3 Digit Numbers: Part 1

3rd
Learn to use regrouping, or carrying to add 536+398.
Instructional Video
Khan Academy

Khan Academy: Adding 3 Digit Numbers

3rd
Learn to use regrouping, or carrying to add 709+996, 373+88, and 149+293.
Instructional Video
Instructional Video
Khan Academy

Khan Academy: Multiplying 3 Digit by 1 Digit (Regrouping)

4th Standards
Learn to multiply a 3-digit number by a 1-digit number using regrouping. In this video, we will multiply 7x253.
Instructional Video
Khan Academy

Khan Academy: Subtracting 3 Digit Numbers (No Regrouping)

2nd - 3rd
Sal shows how to subtract 357-251 (without regrouping) using place value. Includes a video, transcript, and question and answer section. [2:56]
Instructional Video
Khan Academy

Khan Academy: Worked Example: Subtracting 3 Digit Numbers (Regrouping Twice)

3rd Standards
Demonstrates how to subtract 3-digit numbers when there is regrouping in the ones and the tens places. The example used is 913 - 286. [3:47]
Instructional Video
Khan Academy

Khan Academy: Worked Example: Subtracting 3 Digit Numbers (Regrouping)

3rd Standards
Learn to use regrouping (borrowing) and place value to subtract 971-659.
Instructional Video
Khan Academy

Khan Academy: Subtracting 3 Digit Numbers (Regrouping)

3rd Standards
Sal uses regrouping (borrowing) and place value to subtract 629-172.
Instructional Video
Instructional Video
Khan Academy

Khan Academy: Worked Example: Subtracting 3 Digit Numbers (Regrouping From 0)

3rd
Demonstrates how to subtract 3-digit numbers when the first number has a zero in the tens place. The example used is 301 - 164. [2:23]
Instructional Video
Instructional Video
CK-12 Foundation

Ck 12: Elem Math: Overview of Addition (Sums to 1,000)

3rd - 4th
[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]
Instructional Video
Khan Academy

Khan Academy: Subtracting a 1 Digit Number With Regrouping

2nd Standards
Demonstrates how to solve 35 - 8 using drawings of base ten cubes to show the regrouping of ones and tens. [3:11]

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