Double digit Addition without regrouping

Front

What is double digit addition?

Back

Adding two numbers that each have two digits, like 16 + 63.

Front

What does 'without regrouping' mean?

Back

It means that when you add the digits, the sum of each column is less than 10, so you don't carry over any value to the next column.

Front

What is the sum of 16 + 63?

Back

79

Front

What is the sum of 33 + 45?

Back

78

Front

What is the sum of 24 + 2?

Back

26

Front

What is the sum of 12 + 7?

Back

19

Front

What is the sum of 66 + 33?

Back

99

Front

If you add 10 to a number, what happens to the tens place?

Back

The tens place increases by 1.

Front

What is the first step in double digit addition?

Back

Add the digits in the ones place.

Front

What do you do if the sum of the ones place is 10 or more?

Back

You write down the last digit and carry over 1 to the tens place (but this is not applicable in 'without regrouping').