Addition and subtraction with regrouping

Front

What is regrouping in addition?

Back

Regrouping in addition is the process of carrying over a value from one column to the next when the sum of a column exceeds 9.

Front

What is regrouping in subtraction?

Back

Regrouping in subtraction is the process of borrowing from the next column when the top number is smaller than the bottom number in a column.

Front

What is the sum of 345 and 129?

Back

474

Front

What is the difference when subtracting 734 from 573?

Back

161

Front

If a family has traveled 51 miles of a 120-mile trip, how do you find the remaining distance?

Back

Subtract the distance traveled (51 miles) from the total distance (120 miles): 120 - 51 = 69 miles.

Front

Randy Rabbit had 347 carrots and ate 19. How do you find out how many carrots he has left?

Back

Subtract the number of carrots eaten (19) from the total number of carrots (347): 347 - 19 = 328.

Front

What is the term for the result of an addition problem?

Back

The result of an addition problem is called the sum.

Front

What is the term for the result of a subtraction problem?

Back

The result of a subtraction problem is called the difference.

Front

How do you perform addition with regrouping?

Back

Add the digits in each column starting from the right. If the sum exceeds 9, carry over the extra value to the next column.

Front

How do you perform subtraction with regrouping?

Back

Subtract the digits in each column starting from the right. If the top digit is smaller than the bottom digit, borrow from the next column.