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.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is the first step in solving a subtraction problem with regrouping?

Back

Identify the columns from right to left and check if borrowing is needed.

Tags

CCSS.5.NBT.B.7

Front

In the problem 528 - 173, how do you handle the '2' in the ones place?

Back

Since 2 is less than 3, you need to borrow 1 from the '2' in the tens place, making it '12'.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What does it mean to 'borrow' in subtraction?

Back

To 'borrow' means to take 1 from the next left column to increase the current column's top digit by 10.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is the result of 73 - 27?

Back

The result is 46.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

In the problem 407 - 188, what is the first column you subtract?

Back

You start with the ones column, which is 7 - 8, requiring borrowing.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is the importance of lining up numbers by place value in subtraction?

Back

Lining up numbers by place value ensures that you subtract corresponding digits correctly.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is the answer to 45 - 36?

Back

The answer is 9.

Tags

CCSS.2.NBT.B.5

Front

How do you check your subtraction answer?

Back

You can check your answer by adding the difference to the smaller number to see if it equals the larger number.

Tags

CCSS.1.OA.A.1