Subtracting 3-digit numbers

Front

What is subtraction?

Back

Subtraction is the process of taking one number away from another.

Front

What does it mean to subtract a 3-digit number?

Back

It means to take away a number that has three digits, like 123 or 456.

Front

What is the first step in subtracting 3-digit numbers?

Back

Line up the numbers by their place values: hundreds, tens, and ones.

Front

How do you subtract in the ones place?

Back

Subtract the bottom number from the top number in the ones column.

Front

What do you do if the top number is smaller than the bottom number in the ones place?

Back

You need to borrow 1 from the tens place.

Front

What does borrowing mean in subtraction?

Back

Borrowing means taking 1 from the next left place value to help with subtraction.

Front

How do you subtract in the tens place after borrowing?

Back

Subtract the bottom number from the top number in the tens column, remembering to adjust for the borrowed amount.

Front

What is the last step in subtracting 3-digit numbers?

Back

Subtract the numbers in the hundreds place.

Front

Can you give an example of subtracting 3-digit numbers?

Back

Sure! 456 - 123 = 333.

Front

What is the difference between 456 and 123?

Back

The difference is 333.