Curated OER
How Do You Subtract Mixed Fractions with Different Denominators by Regrouping?
Are your young mathematicians having trouble with subtracting mixed fractions? Consider this video to supplement your teaching. An instructor explains step-by-step how to subtract mixed fractions with unlike denominators, showing viewers...
Khan Academy
Singapore Math: Grade 3a, Unit 2 (Part 10)
Sal solves several practice problems in several ways to reinforce four-digit subtraction. He then takes viewers through solving word problems with four-digit subtraction, which requires regrouping. Use these problems as a class challenge...
Curated OER
Singapore Math: Grade 3a, Unit 2 (Part 3)
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...
Khan Academy
Singapore Math: Grade 3a, Unit 2 (Part 4)
Use the Singapore math methods to work through simple problems. Visual representations of word problems allow viewers to start making predictions and estimating the answers. This is a good way for class members to use various methods to...
Khan Academy
Khan Academy: Subtracting a 1 Digit Number With Regrouping
Sal subtracts 35-8 with regrouping. Includes a video, transcript, and question and answer section. [3:10]
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 Addition Sums to 100
[Free Registration/Login may be required to access all resource tools.] The video explains two 2-digit addition problems one with regrouping and the other without regrouping.
Khan Academy
Khan Academy: Subtraction With Borrowing (Regrouping): Why Borrowing Works
An explanation of why (not how) borrowing/regrouping works when subtracting numbers.
Math Playground
Math Playground: How Do You Subtract by Regrouping?
This video illustrates how to perform subtraction by regrouping (or borrowing).
Sophia Learning
Sophia: Adding Fractions With Unlike Denominators Regrouping
Students watch a video lesson about adding fractions with unlike denominators. The tutorial includes examples and a quiz follows to test students' understanding of the skill.
CK-12 Foundation
Ck 12: Elem Math: Overview of Addition Sums to 100
[Free Registration/Login may be required to access all resource tools.] The video explains two, two-digit addition problems one with regrouping and the other without regrouping.
Khan Academy
Khan Academy: Multiplying 3 Digit by 1 Digit (Regrouping)
Learn to multiply a 3-digit number by a 1-digit number using regrouping. In this video, we will multiply 7x253.
Khan Academy
Khan Academy: Associative Property of Multiplication
Sal Khan regroups numbers to simplify multiplication problems. [3:34]