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 us to borrow from the next column.

Front

What does it mean to 'borrow' in subtraction?

Back

To 'borrow' means to take 1 from the next higher place value to help subtract a smaller digit from a larger digit in the current place value.

Front

Solve: 803 - 458

Back

345

Front

Solve: 64 - 25

Back

39

Front

Solve: 74 - 23

Back

51

Front

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

Back

570

Front

Solve: 82 - 36

Back

46

Front

What is the first step in subtraction with regrouping?

Back

The first step is to line up the numbers by their place values (ones, tens, hundreds) before starting the subtraction.

Front

Why is it important to check your work after subtraction?

Back

Checking your work helps ensure that you have not made any mistakes in borrowing or subtracting, leading to a correct answer.

Front

What do you do if you need to subtract a larger digit from a smaller digit in the ones place?

Back

You need to borrow from the next column to the left, reducing that column by 1 and adding 10 to the current column.