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.

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 1 from the next column to the left. 3. Subtract the digits in each column from right to left.

Front

What is the result of 64 - 25?

Back

39

Front

What is the result of 82 - 36?

Back

46

Front

What is the result of 803 - 458?

Back

345

Front

What is the result of 35 - 26?

Back

9

Front

In the problem 'The second grade played a game in PE. There were 52 students who played. 16 were girls. How many boys were there?', how do you find the number of boys?

Back

Subtract the number of girls from the total number of students: 52 - 16 = 36 boys.

Front

What is borrowing in subtraction?

Back

Borrowing is the process of taking 1 from the next left column to help subtract when the top digit is smaller than the bottom digit.

Front

Why is it important to line up numbers by place value when subtracting?

Back

Lining up numbers by place value ensures that each digit is subtracted from the correct corresponding digit, maintaining the accuracy of the operation.

Front

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

Back

Identify if any digits in the top number are smaller than the corresponding digits in the bottom number, starting from the rightmost column.