Addition & Subtraction with Regrouping

Front

What is regrouping in addition and subtraction?

Back

Regrouping is a method used in addition and subtraction where numbers are rearranged to make calculations easier, often involving carrying over or borrowing from adjacent place values.

Front

How do you perform subtraction with regrouping?

Back

To perform subtraction with regrouping, start from the rightmost digit, borrow from the next left digit if necessary, and subtract each column, ensuring to adjust for any borrowed values.

Front

What is the result of 614 - 387?

Back

227

Front

What is the result of 734 - 573?

Back

161

Front

What is the result of 138 + 249?

Back

387

Front

If Mandy had 628 fruits in total and 457 were grapes, how do you find the number of strawberries?

Back

Subtract the number of grapes from the total: 628 - 457 = 171 strawberries.

Front

What is the process of carrying in addition?

Back

Carrying in addition involves moving a value from one column to the next left column when the sum of a column exceeds 9.

Front

What is the process of borrowing in subtraction?

Back

Borrowing in subtraction involves taking 1 from the next left column to make a digit in the current column larger when it is not sufficient to subtract.

Front

What is the importance of place value in addition and subtraction?

Back

Place value is crucial as it determines the value of digits based on their position, affecting how numbers are added or subtracted.

Front

How do you check your work after performing addition or subtraction?

Back

To check your work, you can reverse the operation: for addition, subtract the second number from the sum; for subtraction, add the subtracted number to the result.