Adding with regrouping

Front

What is adding with regrouping?

Back

Adding with regrouping is a method used when the sum of two digits in a column is 10 or more. You carry over the extra value to the next column.

Front

What do we do when we add 8 and 7?

Back

When adding 8 and 7, we get 15. We write down 5 and carry over 1 to the next column.

Front

What is the first step in adding with regrouping?

Back

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

Front

If we add 9 and 6, what do we do next?

Back

9 + 6 = 15. We write down 5 and carry over 1 to the next column.

Front

What does 'carry over' mean?

Back

'Carry over' means to take the extra value from one column and add it to the next column when the sum is 10 or more.

Front

How do we add 27 and 36 using regrouping?

Back

First, add the ones: 7 + 6 = 13. Write down 3 and carry over 1. Then add the tens: 2 + 3 + 1 = 6. So, 27 + 36 = 63.

Front

What is a place value?

Back

Place value is the value of a digit based on its position in a number, such as ones, tens, hundreds.

Front

What happens if the sum of the digits in the tens column is 10 or more?

Back

If the sum is 10 or more, you carry over 1 to the next column.

Front

Can you give an example of adding with regrouping?

Back

Sure! For 45 + 38, add the ones: 5 + 8 = 13 (write 3, carry 1). Then add the tens: 4 + 3 + 1 = 8. So, 45 + 38 = 83.

Front

What is the sum of 14 and 29?

Back

14 + 29 = 43. Add the ones: 4 + 9 = 13 (write 3, carry 1). Add the tens: 1 + 2 + 1 = 4.