3/4 digit addition

Front

What is 3/4 digit addition?

Back

3/4 digit addition refers to the process of adding numbers that have three or four digits. It involves aligning the numbers by place value (hundreds, tens, and units) and adding them column by column.

Front

How do you add 345 + 678?

Back

To add 345 and 678, align the numbers by place value: 345 + 678 ------ 1023 So, 345 + 678 = 1023.

Front

What is the first step in 3/4 digit addition?

Back

The first step is to align the numbers by their place values (hundreds, tens, and units) before starting the addition.

Front

What do you do if a column adds up to more than 9?

Back

If a column adds up to more than 9, you write down the unit digit and carry over the ten to the next column on the left.

Front

What is carrying in addition?

Back

Carrying is the process of transferring a value from one column to the next when the sum of that column exceeds 9.

Front

Add 456 + 789.

Back

456 + 789 = 1245.

Front

What is the sum of 123 + 456?

Back

123 + 456 = 579.

Front

What is a place value?

Back

Place value is the value of a digit based on its position in a number. For example, in the number 345, the 3 is in the hundreds place, the 4 is in the tens place, and the 5 is in the units place.

Front

How do you check your addition?

Back

You can check your addition by adding the numbers again or by using subtraction. Subtract one of the original numbers from the sum to see if you get the other number.

Front

What is the result of 999 + 1?

Back

999 + 1 = 1000.