Double Digit Subtraction with Regrouping #1

Front

What is double digit subtraction?

Back

Double digit subtraction is the process of subtracting numbers that have two digits, such as 35 or 72.

Front

What does regrouping mean in subtraction?

Back

Regrouping in subtraction means borrowing from the next higher place value when the top digit is smaller than the bottom digit.

Front

How do you subtract 35 - 27?

Back

First, regroup the 35 to 30 and 5. Then, borrow 1 from the 3 (making it 2) to add to the 5 (making it 15). Now, subtract: 15 - 7 = 8 and 2 - 2 = 0. So, 35 - 27 = 8.

Front

What is the result of 46 - 27?

Back

The result of 46 - 27 is 19.

Front

How do you solve 72 - 43?

Back

First, regroup the 72 to 60 and 12. Borrow 1 from the 7 (making it 6) to add to the 2 (making it 12). Now, subtract: 12 - 3 = 9 and 6 - 4 = 2. So, 72 - 43 = 29.

Front

What is the answer to 32 - 14?

Back

The answer to 32 - 14 is 18.

Front

How do you subtract 21 - 7?

Back

21 - 7 = 14. You can subtract directly since 1 is greater than 0.

Front

What is borrowing in subtraction?

Back

Borrowing is taking 1 from the next higher place value to help subtract when the top digit is smaller than the bottom digit.

Front

What is the first step in double digit subtraction?

Back

The first step is to line up the numbers by their place values.

Front

What do you do if the top digit is smaller than the bottom digit?

Back

You regroup by borrowing from the next higher place value.