To REGROUP or not to REGROUP

Front

What does it mean to regroup in addition?

Back

Regrouping in addition means to carry over a value from one column to the next when the sum of that column exceeds 9.

Front

When adding 29 + 29, do we regroup?

Back

Yes, we regroup because 29 + 29 equals 58, which requires carrying over.

Front

When adding 88 + 11, do we regroup?

Back

No, we don't regroup because 88 + 11 equals 99, which does not require carrying over.

Front

When adding 101 + 8, do we regroup?

Back

No, we don't regroup because 101 + 8 equals 109, which does not require carrying over.

Front

When adding 67 + 19, do we regroup?

Back

Yes, we regroup because 67 + 19 equals 86, which requires carrying over.

Front

When adding 43 + 53, do we regroup?

Back

No, we don't regroup because 43 + 53 equals 96, which does not require carrying over.

Front

What is the first step in adding two numbers?

Back

The first step is to line up the numbers by their place values (ones, tens, hundreds).

Front

What do you do if the sum of the ones column is 10 or more?

Back

If the sum of the ones column is 10 or more, you regroup by carrying over to the next column.

Front

What is an example of a number that requires regrouping?

Back

An example is 29 + 29, where the sum of the ones column (9 + 9) equals 18.

Front

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

Back

An example is 88 + 11, where the sum of the ones column (8 + 1) equals 9.