NUMBEROCK
Subtraction (Regrouping)
Farmer Jerry loves to rap about regrouping as much as he hates getting chased by those pesky bees! Listen to Farmer Jimmy spin some slick rhymes as he shows us what's going on when we regroup in subtraction. Come along and take a visit...
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Why Borrowing Works
This video shows subtraction of numbers up to four digits, and a recap of borrowing and regrouping. Practice problems are available. [8:34]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Level 4 Subtraction
This video teaches subtraction of up to five-digit numbers using borrowing or regrouping. Practice problems are available. [8:47]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Subtraction 3: 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. Practice problems available. [18:26]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Subtraction Word Problem
This video shows how to solve a subtraction word problem using borrowing or regrouping. Practice problems are available. [5:09]
Khan Academy
Khan Academy: Subtraction With Borrowing (Regrouping): Why Borrowing Works
An explanation of why (not how) borrowing/regrouping works when subtracting numbers.
Khan Academy
Khan Academy: Subtraction With Borrowing (Regrouping): Level 4 Subtraction
This video demonstrate subtraction of up to five-digit numbers using regrouping.
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: Alternate Mental Subtraction Method
This video shows a mental math strategy for subtracting numbers.