Double Digit Addition and Subtraction

Front

What is double digit addition?

Back

Double digit addition is the process of adding two numbers that each have two digits, resulting in a sum that may also be a two-digit or three-digit number.

Front

What is double digit subtraction?

Back

Double digit subtraction is the process of subtracting one two-digit number from another two-digit number, resulting in a difference that may also be a two-digit or one-digit number.

Front

How do you add two-digit numbers?

Back

To add two-digit numbers, align the numbers by place value (tens and ones), add the ones column first, carry over if necessary, and then add the tens column.

Front

How do you subtract two-digit numbers?

Back

To subtract two-digit numbers, align the numbers by place value, subtract the ones column first, borrow from the tens column if necessary, and then subtract the tens column.

Front

What is carrying in addition?

Back

Carrying in addition occurs when the sum of a column exceeds 9, requiring the excess to be carried over to the next column.

Front

What is borrowing in subtraction?

Back

Borrowing in subtraction is the process of taking 1 from the next higher place value when the top digit is smaller than the bottom digit in a column.

Front

What is the sum of 59 and 25?

Back

The sum of 59 and 25 is 84.

Front

If McKenzie had 24 cookies and made 31 more, how many cookies does she have now?

Back

McKenzie has 55 cookies now.

Front

What is the total number of stickers Brenda has after receiving 79 from Jazmin?

Back

Brenda has 103 stickers after receiving 79 from Jazmin.

Front

What is the sum of 13 and 58?

Back

The sum of 13 and 58 is 71.