Three -digit Addition with Regrouping

Front

What is three-digit addition with regrouping?

Back

Three-digit addition with regrouping is a method used to add numbers that are three digits long, where the sum of the digits in any column exceeds 9, requiring the 'carrying over' of values to the next column.

Front

How do you perform addition with regrouping?

Back

To perform addition with regrouping, align the numbers by their place values (hundreds, tens, units), add each column starting from the rightmost column, and if the sum exceeds 9, carry over the extra value to the next column.

Front

What is the sum of 223 and 159?

Back

The sum of 223 and 159 is 382.

Front

What is the process of carrying over in addition?

Back

Carrying over in addition is the process of transferring a value from one column to the next when the sum of a column exceeds 9.

Front

If Molly has 223 songs and her brother has 159 songs, how can we express the total number of songs?

Back

The total number of songs can be expressed as 223 + 159 = 382.

Front

What is the result of adding 516 and 468?

Back

The result of adding 516 and 468 is 984.

Front

What is the importance of place value in addition?

Back

Place value is important in addition because it determines the value of each digit based on its position, ensuring accurate calculations.

Front

How do you check your addition for accuracy?

Back

You can check your addition for accuracy by performing the addition again, using the inverse operation (subtraction), or estimating the sum.

Front

What is the total number of seashells Susan collected last summer and this summer?

Back

Susan collected a total of 335 seashells, calculated as 141 (last summer) + 194 (this summer) = 335.

Front

What does it mean to regroup in addition?

Back

To regroup in addition means to rearrange the values when the sum of a column exceeds 9, moving the excess to the next column.