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, such as 23 + 45.

Front

What is double digit subtraction?

Back

Double digit subtraction is the process of subtracting one two-digit number from another, such as 76 - 34.

Front

What is the sum of 60 and 33?

Back

The sum of 60 and 33 is 93.

Front

What is the sum of 15 and 5?

Back

The sum of 15 and 5 is 20.

Front

What is the sum of 59 and 11?

Back

The sum of 59 and 11 is 70.

Front

What is the difference when you subtract 47 from 75?

Back

The difference when you subtract 47 from 75 is 28.

Front

What is the difference when you subtract 23 from 57?

Back

The difference when you subtract 23 from 57 is 34.

Front

What does 'carry over' mean in addition?

Back

'Carry over' means to move a value from one column to the next when the sum exceeds 9.

Front

What does 'borrow' mean in subtraction?

Back

'Borrow' means to take 1 from the next column to help subtract when the top number is smaller.

Front

How do you add 2-digit numbers?

Back

To add 2-digit numbers, align the numbers by place value, add the ones, then the tens, and carry over if needed.