Two-Digit Addition with Regrouping

Front

What is two-digit addition with regrouping?

Back

It is the process of adding two numbers that are both two digits long, where the sum of the digits in one place value exceeds 9, requiring a carry to the next place value.

Front

What do we do when the sum of the ones place is 10 or more?

Back

We regroup by carrying over 1 to the tens place.

Front

What is the sum of 18 + 53?

Back

71

Front

What is the sum of 53 + 17?

Back

70

Front

What is the sum of 25 + 9?

Back

34

Front

What is the sum of 45 + 45?

Back

90

Front

What is the sum of 43 + 58?

Back

101

Front

How do you add the tens place in two-digit addition?

Back

Add the digits in the tens place together, including any carry from the ones place.

Front

What is a carry in addition?

Back

A carry is when the sum of a column exceeds 9, and you move 1 to the next column.

Front

What is the first step in two-digit addition?

Back

Align the numbers by place value (ones under ones, tens under tens).