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.

Front

How do you borrow in subtraction?

Back

To borrow in subtraction, you take 1 from the next left column, decrease that digit by 1, and add 10 to the current column's digit.

Front

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

Back

The first step is to line up the numbers by place value (ones, tens, hundreds) and start subtracting from the rightmost column.

Front

If you have 261 and need to subtract 193, what is the first column you will subtract?

Back

You will start with the ones column, which is 1 (from 261) minus 3 (from 193). Since 1 is less than 3, you will need to regroup.

Front

What is the result of 1 - 3 when regrouping is needed?

Back

When regrouping is needed, you borrow 1 from the tens column, making it 11 - 3, which equals 8.

Front

In the problem 604 - 278, what do you do in the tens column?

Back

In the tens column, you have 0 - 7. Since 0 is less than 7, you need to borrow from the hundreds column.

Front

What is the final answer to 261 - 193?

Back

The final answer is 68.

Front

If a teacher had 85 pencils and used 76, how do you set up the subtraction?

Back

You set it up as 85 - 76, starting from the ones column.

Front

What is the answer to 85 - 76?

Back

The answer is 9.

Front

How do you find out how many books are left after donating?

Back

You subtract the number of books donated from the total number of books.