Subtraction with Regrouping

Front

What is subtraction with regrouping?

Back

Subtraction with regrouping is a method used to subtract numbers when the top digit is smaller than the bottom digit in any column, requiring borrowing from the next left column.

Tags

CCSS.7.NS.A.1C

Front

How do you perform subtraction with regrouping?

Back

1. Start from the rightmost column. 2. If the top digit is smaller than the bottom digit, borrow from the next column to the left. 3. Subtract the digits in each column, moving left.

Tags

CCSS.3.NBT.A.2

CCSS.2.NBT.B.7

Front

What is the result of 456 - 268?

Back

188

Tags

CCSS.3.NBT.A.2

CCSS.2.NBT.B.7

Front

What is the result of 804 - 773?

Back

31

Tags

CCSS.4.NBT.B.4

Front

What is the result of 900 - 749?

Back

151

Front

What is the result of 842 - 593?

Back

249

Tags

CCSS.3.NBT.A.2

CCSS.2.NBT.B.7

Front

What is the result of 879 - 96?

Back

783

Tags

CCSS.3.NBT.A.2

CCSS.2.NBT.B.7

Front

What does it mean to 'borrow' in subtraction?

Back

To 'borrow' means to take 1 from the next left column to make the current column's top digit larger, allowing for subtraction when the top digit is smaller.

Tags

CCSS.5.NBT.B.7

Front

Why is regrouping necessary in subtraction?

Back

Regrouping is necessary when the digit in the minuend (top number) is smaller than the digit in the subtrahend (bottom number) in any column.

Tags

CCSS.2.NBT.B.7

Front

What is the minuend in a subtraction problem?

Back

The minuend is the number from which another number (the subtrahend) is subtracted.

Tags

CCSS.1.OA.A.1