3 Digit Addition and Subtraction with Regrouping

Front

What is regrouping in addition?

Back

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

Front

What is regrouping in subtraction?

Back

Regrouping in subtraction is the process of borrowing from the next column when the top number is smaller than the bottom number in a column.

Front

How do you add three-digit numbers?

Back

To add three-digit numbers, align the numbers by place value (hundreds, tens, units), add starting from the rightmost column, and regroup if necessary.

Front

How do you subtract three-digit numbers?

Back

To subtract three-digit numbers, align the numbers by place value, subtract starting from the rightmost column, and regroup if necessary.

Front

What is the sum of 641 and 276?

Back

The sum of 641 and 276 is 917.

Front

What is the difference when subtracting 278 from 456?

Back

The difference when subtracting 278 from 456 is 178.

Front

What is the sum of 687 and 291?

Back

The sum of 687 and 291 is 978.

Front

What is the sum of 382 and 339?

Back

The sum of 382 and 339 is 721.

Front

What is the sum of 793 and 125?

Back

The sum of 793 and 125 is 918.

Front

What is the first step in solving a three-digit addition problem?

Back

The first step is to align the numbers by their place values (hundreds, tens, units).