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

What does it mean to 'borrow' in subtraction?

Back

To 'borrow' means to take 1 from the next higher place value to make the current digit larger so that subtraction can be performed.

Tags

CCSS.5.NBT.B.7

Front

Solve: 900 - 749 = ?

Back

151

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

Solve: 571 - 152 = ?

Back

419

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

Solve: 614 - 387 = ?

Back

227

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

Solve: 456 - 268 = ?

Back

188

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

Solve: 502 - 297 = ?

Back

205

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is the first step in subtraction with regrouping?

Back

The first step is to line up the numbers by their place values (ones, tens, hundreds) before starting the subtraction.

Tags

CCSS.2.NBT.B.7

Front

Why is it important to line up numbers correctly in subtraction?

Back

Lining up numbers correctly ensures that each digit is subtracted from the correct place value, preventing errors.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What do you do if you need to subtract a larger digit from a smaller digit?

Back

You borrow from the next column to the left, reducing that digit by 1 and adding 10 to the current digit.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2