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 perform subtraction with regrouping?

Back

To perform subtraction with regrouping, start from the rightmost column, borrow from the next column if necessary, and subtract each column from right to left.

Front

What is the first step in solving 243 - 192 using regrouping?

Back

The first step is to look at the ones column (3 - 2), which can be done without regrouping.

Front

In the subtraction 243 - 192, why do we need to regroup in the tens column?

Back

We need to regroup in the tens column because 4 (in 243) is less than 9 (in 192), so we borrow 1 from the hundreds column.

Front

What is the result of 243 - 192 after regrouping?

Back

The result is 51.

Front

What is the importance of borrowing in subtraction with regrouping?

Back

Borrowing is important because it allows us to subtract larger digits from smaller ones in each column.

Front

When subtracting 190 - 179, what is the first column that requires regrouping?

Back

The tens column requires regrouping because 9 is less than 7.

Front

What is the answer to 190 - 179?

Back

The answer is 11.

Front

In the problem 472 - 446, what do you do in the ones column?

Back

In the ones column, you subtract 2 - 6, which requires regrouping.

Front

What is the result of 472 - 446?

Back

The result is 26.