Three digit subtraction with regrouping

Front

What is three-digit subtraction with regrouping?

Back

It is a method of subtracting numbers that have three digits, where you may need to borrow from the next higher place value when the top digit is smaller than the bottom digit.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What does regrouping mean in subtraction?

Back

Regrouping means rearranging the numbers to make subtraction easier, often by borrowing from the next column.

Tags

CCSS.7.NS.A.1C

Front

How do you subtract 735 - 257?

Back

735 - 257 = 478.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

How do you subtract 571 - 108?

Back

571 - 108 = 463.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

How do you subtract 549 - 372?

Back

549 - 372 = 177.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

How do you subtract 647 - 429?

Back

647 - 429 = 218.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is the first step in three-digit subtraction with regrouping?

Back

The first step is to line up the numbers by their place values: hundreds, tens, and ones.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What do you do if the top digit is smaller than the bottom digit in the ones place?

Back

You borrow 1 from the tens place, which makes the top digit in the ones place larger.

Tags

CCSS.2.NBT.B.7

Front

What happens when you borrow from the tens place?

Back

When you borrow from the tens place, you decrease the tens digit by 1 and add 10 to the ones digit.

Tags

CCSS.2.NBT.B.7

Front

Can you give an example of borrowing in subtraction?

Back

In 735 - 257, you need to borrow from the tens place because 5 is smaller than 7.

Tags

CCSS.7.NS.A.1C