2 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 two-digit numbers with regrouping?

Back

To add two-digit numbers with regrouping, start from the rightmost column, add the digits, and if the sum is 10 or more, carry over the extra value to the next column.

Front

How do you subtract two-digit numbers with regrouping?

Back

To subtract two-digit numbers with regrouping, start from the rightmost column, if the top digit is smaller than the bottom digit, borrow from the next column.

Front

What is the sum of 21 and 47?

Back

The sum of 21 and 47 is 68.

Front

What is the difference between 73 and 27?

Back

The difference between 73 and 27 is 46.

Front

What is the result of 59 minus 47?

Back

The result of 59 minus 47 is 12.

Front

What is 17 plus 31?

Back

17 plus 31 equals 48.

Front

What is the result of 45 minus 36?

Back

The result of 45 minus 36 is 9.

Front

What is the first step in adding two-digit numbers?

Back

The first step in adding two-digit numbers is to align the numbers by their place values.