Adding Two Digit Numbers

Front

What is the sum of 89 and 99?

Back

188

Front

What is the sum of 22 and 11?

Back

33

Front

What is the sum of 45 and 25?

Back

70

Front

If Sasha has 22 apples and picks 10 more, how many apples does she have in total?

Back

32

Front

What is the sum of 92 and 09?

Back

101

Front

What is the definition of addition?

Back

Addition is the mathematical operation of combining two or more numbers to get a total.

Front

What is a two-digit number?

Back

A two-digit number is a number that has two digits, ranging from 10 to 99.

Front

How do you add two-digit numbers?

Back

Align the numbers by their rightmost digits, add the digits in each column starting from the right, and carry over if the sum exceeds 9.

Front

What is carrying in addition?

Back

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

Front

What is the commutative property of addition?

Back

The commutative property states that changing the order of the addends does not change the sum (e.g., a + b = b + a).