Regrouping in Addition

Questions and Answers

To multiply digits in a column

To handle sums greater than 10 in a column (correct)

To subtract digits in a column

To divide digits in a column

Multiply the sum by 10

Stop adding and move to the next column

Subtract the extra tens from the sum

Regroup the extra tens to the next column (correct)

Check for regrouping, add the digits, carry the tens, repeat the process

Add the digits, check for regrouping, carry the tens, repeat the process (correct)

Repeat the process, add the digits, check for regrouping, carry the tens

Carry the tens, add the digits, check for regrouping, repeat the process

72 Signup and view all the answers

They are carried to the next column Signup and view all the answers

Add 9 and 3 and 0 in the tens column Signup and view all the answers

Study Notes

What is Regrouping?

Regrouping is a strategy used in addition to handle situations where the sum of two or more digits in a column is greater than 10.
It involves "carrying" or "regrouping" the extra tens to the next column.

How to Regroup

Add the digits: Add the digits in each column as usual.
Check for regrouping: If the sum of the digits in a column is greater than 10, regroup the extra tens to the next column.
Carry the tens: Add the regrouped tens to the next column.
Repeat the process: Continue adding and regrouping until all columns have been added.

Examples

45 + 27 =
- Add the digits in the ones column: 5 + 7 = 12
- Regroup the extra tens: 1 ten carried to the tens column
- Add the digits in the tens column: 4 + 2 + 1 = 7
- Answer: 72
94 + 35 =
- Add the digits in the ones column: 4 + 5 = 9
- Add the digits in the tens column: 9 + 3 + 0 = 12
- Regroup the extra tens: 1 ten carried to the hundreds column
- Answer: 129

Regrouping is a strategy used in addition to handle situations where the sum of two or more digits in a column is greater than 10.
It involves "carrying" or "regrouping" the extra tens to the next column.

Add the digits in each column as usual.
Check if the sum of the digits in a column is greater than 10, and regroup the extra tens to the next column.
Carry the regrouped tens to the next column.
Continue adding and regrouping until all columns have been added.