Subtraction with regrouping

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.

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

'Borrowing' in subtraction means taking 1 from the next higher place value to make the current digit larger, allowing for the subtraction to be performed.

Since 3 is less than 6, you need to borrow 1 from the 4 in the tens place, making it 3, and adding 10 to the 3 in the ones place, making it 13. Then, you can subtract 13 - 6 = 7.

The result of 57 - 45 is 12.

In 86 - 50, you cannot subtract 0 from 6, so you keep the 8 in the tens place and subtract 5 from it, making it 7. Then, you subtract 6 - 0 = 6 and 7 - 5 = 2, resulting in 36.

Place value is crucial in subtraction as it determines the value of each digit in a number, guiding how to borrow and subtract correctly.

To check your subtraction answer, you can add the result to the subtracted number and see if it equals the original number.

The answer to 29 - 11 is 18.

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