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 column.

Tags

CCSS.7.NS.A.1C

Front

How do you borrow in subtraction?

Back

To borrow in subtraction, you take 1 from the next left column, reducing it by 1, and add 10 to the current column to make it easier to subtract.

Tags

CCSS.2.NBT.B.7

Front

What is the first step in solving 922 - 355?

Back

The first step is to look at the ones place: 2 - 5 cannot be done, so you need to borrow from the tens place.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What do you do when you can't subtract a digit in the ones place?

Back

You borrow 1 from the next column to the left, turning the current digit into a larger number.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

Solve: 922 - 355 = ?

Back

567

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

Solve: 641 - 368 = ?

Back

273

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

Solve: 1,630 - 547 = ?

Back

1,083

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

Solve: 436 - 89 = ?

Back

347

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

Solve: 738 - 259 = ?

Back

479

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is the importance of lining up numbers in subtraction?

Back

Lining up numbers by place value ensures that you subtract the correct digits from each other.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2