Addition and Subtraction with regrouping (3.NBT.2)

Front

What is regrouping in addition?

Back

Regrouping is the process of carrying over a value from one column to the next when the sum exceeds 10.

Front

What is the sum of 345 and 129?

Back

474

Front

What is the sum of 572 and 348?

Back

920

Front

What is the sum of 245 and 372?

Back

617

Front

What is the sum of 136 and 218?

Back

354

Front

What is the sum of 125 and 125?

Back

250

Front

How do you add numbers with regrouping?

Back

1. Add the digits in the rightmost column. 2. If the sum is 10 or more, carry over to the next column.

Front

What is the value of 10 in the tens place?

Back

10 in the tens place represents one group of ten.

Front

What happens when you add 9 and 5?

Back

9 + 5 = 14, so you regroup by carrying over 1 to the next column.

Front

What is subtraction with regrouping?

Back

Subtraction with regrouping is when you borrow from the next column when the top digit is smaller than the bottom digit.