Adding Two Digit Numbers

Front

What is a two-digit number?

Back

A two-digit number is a number that has two places, such as 10, 25, or 99.

Front

How do you add two-digit numbers?

Back

To add two-digit numbers, you add the tens place first, then the ones place, and combine the results.

Front

What is the sum of 23 and 15?

Back

The sum of 23 and 15 is 38.

Front

What is carrying in addition?

Back

Carrying is when the sum of the digits in a column is more than 9, and you move the extra value to the next column.

Front

What is the tens place in the number 47?

Back

The tens place in the number 47 is 4.

Front

What is the ones place in the number 56?

Back

The ones place in the number 56 is 6.

Front

If you add 30 and 20, what do you get?

Back

If you add 30 and 20, you get 50.

Front

What is a number line?

Back

A number line is a straight line that represents numbers in order, used to visualize addition and subtraction.

Front

What is the sum of 12 and 27?

Back

The sum of 12 and 27 is 39.

Front

What does it mean to regroup in addition?

Back

Regrouping means to rearrange numbers when adding, especially when carrying over to the next column.