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, moving left.

Front

What is the result of 64 - 25?

Back

39

Front

What is the result of 82 - 36?

Back

46

Front

If there are 323 postcards and 125 are used, how many are left?

Back

198 postcards.

Front

What is the result of 803 - 458?

Back

345

Front

How do you find the difference in weight between two objects?

Back

Subtract the weight of the lighter object from the weight of the heavier object.

Front

If Ellie weighs 905 pounds and Kirby weighs 335 pounds, how much more does Ellie weigh than Kirby?

Back

Ellie weighs 570 pounds more than Kirby.

Front

What is borrowing in subtraction?

Back

Borrowing is the process of taking 1 from the next left column to help subtract a smaller digit from a larger digit in the same column.

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 correctly according to its value (units, tens, hundreds, etc.).