Subtraction- Regrouping or Not

Front

What is subtraction?

Back

Subtraction is taking away one number from another.

Front

What does it mean to regroup in subtraction?

Back

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

Front

When do you regroup in subtraction?

Back

You regroup when the digit in the top number is smaller than the digit in the bottom number in any column.

Front

What is the first step in subtraction?

Back

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

Front

What do you do if the top number has the same digit as the bottom number?

Back

If the digits are the same, you subtract and get zero.

Front

What is an example of a subtraction problem that does not require regrouping?

Back

Example: 72 - 21 = 51.

Front

What is an example of a subtraction problem that requires regrouping?

Back

Example: 54 - 27 = 27 (you need to borrow from the 5).

Front

What is the term for the number you subtract from?

Back

The term is 'minuend'.

Front

What is the term for the number you are subtracting?

Back

The term is 'subtrahend'.

Front

What is the result of a subtraction problem called?

Back

The result is called the 'difference'.