Three Digit Addition Review

Front

What is three-digit addition?

Back

Three-digit addition is the process of adding numbers that have three digits, which can range from 100 to 999.

Front

What is the sum of 649 and 588?

Back

The sum of 649 and 588 is 1237.

Front

What is the sum of 462 and 784?

Back

The sum of 462 and 784 is 1246.

Front

What is the sum of 809 and 315?

Back

The sum of 809 and 315 is 1124.

Front

What is the sum of 728 and 209?

Back

The sum of 728 and 209 is 937.

Front

What is the sum of 256 and 172?

Back

The sum of 256 and 172 is 428.

Front

How do you carry over in addition?

Back

When the sum of a column exceeds 9, you write down the last digit and carry over the first digit to the next column.

Front

What is the first step in three-digit addition?

Back

Align the numbers by their place values (hundreds, tens, and units) before adding.

Front

What is a place value?

Back

Place value is the value of a digit based on its position in a number, such as hundreds, tens, or units.

Front

What is the importance of estimating sums?

Back

Estimating sums helps to quickly check if the actual sum is reasonable and to simplify calculations.