2 Digit Addition

Front

What is the sum of 70 and 20?

Back

90

Front

What is the sum of 44 and 23?

Back

67

Front

If Jane had 10 balls and Bob gave her 2 more, how many balls does she have now?

Back

12

Front

What is the sum of 32 and 46?

Back

78

Front

What is the sum of 25 and 11?

Back

36

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 place value (tens and units), add the units, carry over if necessary, and then add the tens.

Front

What is carrying in addition?

Back

Carrying is the process of transferring a value from one column to the next when the sum exceeds the base value (e.g., 10 in decimal).

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).